-4+7(3x+15)=20

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Solution for -4+7(3x+15)=20 equation: 



-4+7(3x+15)=20

We move all terms to the left:

-4+7(3x+15)-(20)=0

We add all the numbers together, and all the variables

7(3x+15)-24=0

We multiply parentheses

21x+105-24=0

We add all the numbers together, and all the variables

21x+81=0

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

21x=-81

x=-81/21

x=-3+6/7

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