5x=5(90-x)

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Solution for 5x=5(90-x) equation: 



5x=5(90-x)

We move all terms to the left:

5x-(5(90-x))=0

We add all the numbers together, and all the variables

5x-(5(-1x+90))=0



We calculate terms in parentheses: -(5(-1x+90)), so:

5(-1x+90)

We multiply parentheses

-5x+450

Back to the equation:

-(-5x+450)



We get rid of parentheses

5x+5x-450=0

We add all the numbers together, and all the variables

10x-450=0

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

10x=450

x=450/10

x=45

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