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a) X – 34562 = 2345
X= 2345 + 34562
X = 36907
b) X : 34 = 1023
X= 1023 x 34
X =34782
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Ta có :
250 * y + 750 * y = 1001 * 2345 - 2345
=> ( 250 + 750 ) * y = ( 1001 - 1 ) * 2345
=> 1000 * y = 1000 * 2345
=> y = 2345
Vậy y = 2345
\(yx\left(250+750\right)=2347345-2345\)
\(yx1000=2345000\)
\(y=2345000:1000\)
\(y=2345\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Hiệu x – y | 432 | 308 | 602 | 2000 | 2345 |
Tỉ số x : y | 4:1 | 2:1 | 6:3 | 5:3 | 7:2 |
x | 576 | 616 | 1206 | 5000 | 3283 |
y | 144 | 308 | 603 | 3000 | 938 |
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(x-2345)*5=2550
(x-2345) = 2550 : 5
(x-2345) = 510
x = 510 + 2345
x = 2.855
Vậy......
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6/7 + 5/8 = 83/56
36/12 - 5/3= 3 - 5/3 = 9/3 - 5/3 = 4/3
7/9 x 18/49 = 126/441 = 2/7
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ôi dồi ôi!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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\(\left(x-2345\right).5=2550\)
\(\left(x-2345\right)=2550:5\)
\(x=510+2345\)
\(x=2855\)
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\(=2345\left(7+13+80\right)+7655\left(24+25+51\right)=10000\cdot100=1000000\)
a) X + 2345 : 5 = 36978
X + 469 = 36978
X = 36978 - 469
X = 36509
b) X : 27 + 395 = 836
X : 27 = 836 - 395
X : 27 = 441
X = 441 x 27
X = 11907
k cho mk nha :)
a)x+2345:5=36978 b)x:27+395=836
x+(2345:5)=36978 x:27=836-395
x+469=36978 x:27=441
x=36978-469 x=441.27
x=36509 x=11907