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19 tháng 3 2022

Tổng hai số là:    1000 x 2 =  2000

Số thứ nhất :   (2000 +  640) :  2 = 1320

Số thứ hai :    2000 - 1320 = 680

Số thứ nhất 1320

Số thứ hai 680

28 tháng 8 2017

Đáp án B

30 tháng 10 2021
ĐÁP ÁN: B . 1320 và 680
2 tháng 11 2019

Đáp án B

1 tháng 11 2021

b

21 tháng 10 2017

Tổng hai số là:    1000 x 2 =  2000

Số thứ nhất :   (2000 +  640) :  2 = 1320

Số thứ nhất :    2000 - 1320 = 680

11 tháng 3 2018

Tổng 2 số là : 

1000 x 2 = 2000 

Số thứ nhất là : 

( 2000 + 640 ) : 2 = 1320 

Số thứ hai là : 

2000 - 1320 = 680 

              Đ/s :       Số thứ 1 : 1320 

                            Số thứ 2 : 680 

Tk mk nha !!! 

11 tháng 3 2018

tổng hai số là

1000.2=2000

số thứ hai là

(2000-640)/2=680

số thứ nhất là

680+640=1320

đáp số:số thứ nhất:1320

             số thứ hai 680

. là dấu nhân nhé

chúc bạn hok tốt

18 tháng 8 2017

tong 2 so la: 262x2= 524

so1 la:(524 + 226) :2 =375

so2 la :524 - 375= 149

18 tháng 8 2017

Tổng của hai số là 

262x2=524

Số thứ hai là 

(524-226):2=149

Số thứ nhất là 

(524+226):2=375

  Đáp số.......

Nếu giảm số thứ hai đi 468 đvị thì được số thứ nhất => Số thứ hai hơn số thứ nhất 468 đvị

Tổng hai số là 

1000x2=2000

Số thứ nhất là 

(2000-468):2=766

Số thứ hai là

(2000+468):2=1234

  Đáp số.........

Số thứ hai là:

\(2000\cdot\dfrac{3}{5}=1200\)

Số thứ nhất là 

2000-1200=800

7 tháng 11 2021

999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999

10 tháng 11 2021

B nha bạn

10 tháng 11 2021

B . 1320 và 680

15 tháng 6 2017

Gọi số thứ nhất, hai , ba theo thứ tự đề bài là a, b và c. 

Theo đề bài, ta có (a+b+c):3 = 126 ; a - b = 15 suy ra a = b+15 ; b - c =9 suy ra c = b - 9

Do đó \(\frac{a+b+c}{3}=126\Rightarrow b+15+b+b-9=378\Rightarrow3b=372\Rightarrow b=124\Rightarrow c=124-9=115\)

Vậy số thứ ba là 115

15 tháng 6 2017

BẠN ƠI ĐỀ BÀI YÊU CẦU TÌM BA SỐ ĐÓ CƠ MÀ !