7+4a=-2(3a+5)+7

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Solution for 7+4a=-2(3a+5)+7 equation: 



7+4a=-2(3a+5)+7

We move all terms to the left:

7+4a-(-2(3a+5)+7)=0



We calculate terms in parentheses: -(-2(3a+5)+7), so:

-2(3a+5)+7

We multiply parentheses

-6a-10+7

We add all the numbers together, and all the variables

-6a-3

Back to the equation:

-(-6a-3)



We get rid of parentheses

4a+6a+3+7=0

We add all the numbers together, and all the variables

10a+10=0

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

10a=-10

a=-10/10

a=-1

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