Question

Tìm X biết: X x 34,5 + X x 66,5 - X = 1000

Answer 1

=>100x=1000

hay x=10

Answer 2

\(x\times\left(34,5+66,5-1\right)=1000\)

\(x\times100=1000\)

x = 1000 : 100 

x = 100

Answer 3

\(101x-x=1000\\ 100x=1000\\ x=10\)

Answer 4

x = 1000 : 100 

x=10

Answer 5

X x 34,5 + X x 66,5 - X = 1000

`x×(34,5+66,5−1)=1000`

`x xx100=1000`

`x=1000:100`

`x=10`

 

Answer 6

`x xx 34,5 + x xx 66,5 - x = 100`

`=> x xx (34,5 + 66,5 - 1) = 100`

`=> x xx 100 = 100`

`=> x             = 100 : 100`

`=> x            = 101`

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áp dụng :

`a xx b + c xx b`

`= b xx (a + c)`