-7(1+3a)=112

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Solution for -7(1+3a)=112 equation: 



-7(1+3a)=112

We move all terms to the left:

-7(1+3a)-(112)=0

We add all the numbers together, and all the variables

-7(3a+1)-112=0

We multiply parentheses

-21a-7-112=0

We add all the numbers together, and all the variables

-21a-119=0

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

-21a=119

a=119/-21

a=-5+2/3

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