15+4a=-3(1+4a)-2a

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Solution for 15+4a=-3(1+4a)-2a equation: 



15+4a=-3(1+4a)-2a

We move all terms to the left:

15+4a-(-3(1+4a)-2a)=0

We add all the numbers together, and all the variables

4a-(-3(4a+1)-2a)+15=0



We calculate terms in parentheses: -(-3(4a+1)-2a), so:

-3(4a+1)-2a

We add all the numbers together, and all the variables

-2a-3(4a+1)

We multiply parentheses

-2a-12a-3

We add all the numbers together, and all the variables

-14a-3

Back to the equation:

-(-14a-3)



We get rid of parentheses

4a+14a+3+15=0

We add all the numbers together, and all the variables

18a+18=0

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

18a=-18

a=-18/18

a=-1

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