8-7a=-7-4a

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Solution for 8-7a=-7-4a equation: 



8-7a=-7-4a

We move all terms to the left:

8-7a-(-7-4a)=0

We add all the numbers together, and all the variables

-7a-(-4a-7)+8=0

We get rid of parentheses

-7a+4a+7+8=0

We add all the numbers together, and all the variables

-3a+15=0

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

-3a=-15

a=-15/-3

a=+5

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