1298 X 58 = 2365 x 700 =
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x - 4589 + 15 = 1020 + 45
x - 4589 + 15 = 1065
x - 4589 = 1065 - 15
x - 4589 = 1050
x = 1050 + 4589
x = 5639
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a) 1298 - 483873 : ( x + 740 ) = 682 - 333 : 9
1298 - 483873 : ( x + 740 ) = 682 - 37
1298 - 483873 : ( x + 740 ) = 645
483873 : ( x + 740 ) = 1298 - 645
483873 : ( x + 740 ) = 653
( x + 740 ) = 483873 : 653
x + 740 = 741
x = 741 - 740
x = 1
b ) 370 + 389 . ( 293 - x ) = 110457
389 . ( 293 - x ) = 110457 - 370
389 . ( 293 - x ) = 110087
( 293 - x ) = 11087 : 389
293 - x = 283
x = 293 - 283
x = 10
Học tốt nhé###
\(a,1298-483873:(x+740)=682-333:9\)
\(\Leftrightarrow1298-483873:(x+740)=682-37\)
\(\Leftrightarrow1298-483873:(x+740)=645\)
\(\Leftrightarrow483873:(x+740)=653\)
\(\Leftrightarrow x+740=741\Leftrightarrow x=1\)
Vậy x = 1
Bài cuối cũng tương tự
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Kết quả của phép tính: 17,58 x 43 + 57 x 17, 58 là: 1758
Trình bày đầy đủ :
17,58 x 43 + 57 x 17, 58
= 17,58 x ( 43 + 57 )
= 17,58 x 100 = 1758
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Hi ! , My name isThuong. I'm 12 years old and I'm a student at An Trung secondary school . Today ,I'm happy to tell you about my neighbourhood. I live in Dien Chau district . My neighbourhood is different from another district . My neighbourhood is perfect with fine weather , beautiful beaches and fresh air . The people are friendly and kind . Every home in here has a big garden . My neighbourhood is very peaceful every day . But somethings i don't about my neighbourhood : The makets , Shops are far from my house . I living here because i can enjoy a lot of fresh food . I love my neighbourhood so much !
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TL:
\(1298x58=75.284\)
\(2365x700=1.655.500\)
~HT~
TL:
câu hỏi sai
_HT_