-(a+3)+7=3a

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



-(a+3)+7=3a

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-3a-a-3+7=0

We add all the numbers together, and all the variables

-4a+4=0

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

-4a=-4

a=-4/-4

a=1

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