8x=7(45-x)

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Solution for 8x=7(45-x) equation: 



8x=7(45-x)

We move all terms to the left:

8x-(7(45-x))=0

We add all the numbers together, and all the variables

8x-(7(-1x+45))=0



We calculate terms in parentheses: -(7(-1x+45)), so:

7(-1x+45)

We multiply parentheses

-7x+315

Back to the equation:

-(-7x+315)



We get rid of parentheses

8x+7x-315=0

We add all the numbers together, and all the variables

15x-315=0

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

15x=315

x=315/15

x=21

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