12a+40=-15a-64

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Solution for 12a+40=-15a-64 equation: 



12a+40=-15a-64

We move all terms to the left:

12a+40-(-15a-64)=0

We get rid of parentheses

12a+15a+64+40=0

We add all the numbers together, and all the variables

27a+104=0

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

27a=-104

a=-104/27

a=-3+23/27

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