x+7=3(5-x)

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Solution for x+7=3(5-x) equation: 



x+7=3(5-x)

We move all terms to the left:

x+7-(3(5-x))=0

We add all the numbers together, and all the variables

x-(3(-1x+5))+7=0



We calculate terms in parentheses: -(3(-1x+5)), so:

3(-1x+5)

We multiply parentheses

-3x+15

Back to the equation:

-(-3x+15)



We get rid of parentheses

x+3x-15+7=0

We add all the numbers together, and all the variables

4x-8=0

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

4x=8

x=8/4

x=2

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