7=-4(x-7)+15

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Solution for 7=-4(x-7)+15 equation: 



7=-4(x-7)+15

We move all terms to the left:

7-(-4(x-7)+15)=0



We calculate terms in parentheses: -(-4(x-7)+15), so:

-4(x-7)+15

We multiply parentheses

-4x+28+15

We add all the numbers together, and all the variables

-4x+43

Back to the equation:

-(-4x+43)



We get rid of parentheses

4x-43+7=0

We add all the numbers together, and all the variables

4x-36=0

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

4x=36

x=36/4

x=9

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