8+4a=a-7

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



8+4a=a-7

We move all terms to the left:

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

We get rid of parentheses

4a-a+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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