7-5a+8a=-a-1

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Solution for 7-5a+8a=-a-1 equation: 



7-5a+8a=-a-1

We move all terms to the left:

7-5a+8a-(-a-1)=0

We add all the numbers together, and all the variables

-5a+8a-(-1a-1)+7=0

We add all the numbers together, and all the variables

3a-(-1a-1)+7=0

We get rid of parentheses

3a+1a+1+7=0

We add all the numbers together, and all the variables

4a+8=0

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

4a=-8

a=-8/4

a=-2

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