425 : 5 - 121 : 111 + 37 x 4

= 85 - \(\dfrac{121}{111}\)+ 148

= \(\dfrac{2319}{10}\)

\(-\dfrac{1}{4}\times13\dfrac{9}{11}-0,25\times6\dfrac{2}{11}\\ =-\dfrac{1}{4}\times\dfrac{152}{11}+\left(-\dfrac{1}{4}\right)\times\dfrac{68}{11}\\ =-\dfrac{1}{4}\times\left(\dfrac{152}{11}+\dfrac{68}{11}\right)\\ =-\dfrac{1}{4}\times\dfrac{220}{11}\\ =-\dfrac{1}{4}\times20\\ =-5\)

mk ko ghi lại đề nhé.

= -1/4 x 152/11 - 25/100 x 68/11

= -1/4 x 152/11 - 1/4 x 68/11

= -1/4 x ( 152/11 + 68/11)

= -1/4 x 20

= -5 

512x16=8192

8^3x2^4=512x16

             = 8192

Tích cho mk nha

575-(b.x+70)=445

b.x+70=130

b.x=60

ko ra đc

20=2.2.5

5=5.1

10=2.5

lũy thừa : \(2^3\).\(5^3\).1

a, 500000000 x 1000000001

b, 1000000000(1 tỉ đó)

mình cần lời giải đầy đủ nhé

56-48:(x-7)=100:2

56-48:(x-7)=50

48:(x-7)=56-50

48:(x-7)=6

x-7 = 48:6

x-7=8

x=7+8

x=15

\(2\times\left[56-48:\left(x-7\right)\right]=100\)

\(\Rightarrow56-48:\left(x-7\right)=100:2\)

\(\Rightarrow56-48:\left(x-7\right)=50\)

\(\Rightarrow48:\left(x-7\right)=56-50\)

\(\Rightarrow48:\left(x-7\right)=6\)

\(\Rightarrow x-7=48:6\)

\(\Rightarrow x-7=8\)

\(\Rightarrow x=8+7\)

\(\Rightarrow x=15\)

Vậy $x=15$