15-4(x+3)=40

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Solution for 15-4(x+3)=40 equation: 



15-4(x+3)=40

We move all terms to the left:

15-4(x+3)-(40)=0

We add all the numbers together, and all the variables

-4(x+3)-25=0

We multiply parentheses

-4x-12-25=0

We add all the numbers together, and all the variables

-4x-37=0

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

-4x=37

x=37/-4

x=-9+1/4

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