3-7(a+2)=10

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Solution for 3-7(a+2)=10 equation: 



3-7(a+2)=10

We move all terms to the left:

3-7(a+2)-(10)=0

We add all the numbers together, and all the variables

-7(a+2)-7=0

We multiply parentheses

-7a-14-7=0

We add all the numbers together, and all the variables

-7a-21=0

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

-7a=21

a=21/-7

a=-3

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