3a+7=2(3+a)=

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



3a+7=2(3+a)=

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -(2(a+3)), so:

2(a+3)

We multiply parentheses

2a+6

Back to the equation:

-(2a+6)



We get rid of parentheses

3a-2a-6+7=0

We add all the numbers together, and all the variables

a+1=0

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

a=-1

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