90x=70(8-x)

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Solution for 90x=70(8-x) equation: 



90x=70(8-x)

We move all terms to the left:

90x-(70(8-x))=0

We add all the numbers together, and all the variables

90x-(70(-1x+8))=0



We calculate terms in parentheses: -(70(-1x+8)), so:

70(-1x+8)

We multiply parentheses

-70x+560

Back to the equation:

-(-70x+560)



We get rid of parentheses

90x+70x-560=0

We add all the numbers together, and all the variables

160x-560=0

We move all terms containing x to the left, all other terms to the right

160x=560

x=560/160

x=3+1/2

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