-x+3(x+4)=20

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



-x+3(x+4)=20

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1x+3(x+4)-20=0

We multiply parentheses

-1x+3x+12-20=0

We add all the numbers together, and all the variables

2x-8=0

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

2x=8

x=8/2

x=4

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