-a+7=3a-8

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Solution for -a+7=3a-8 equation: 



-a+7=3a-8

We move all terms to the left:

-a+7-(3a-8)=0

We add all the numbers together, and all the variables

-1a-(3a-8)+7=0

We get rid of parentheses

-1a-3a+8+7=0

We add all the numbers together, and all the variables

-4a+15=0

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

-4a=-15

a=-15/-4

a=3+3/4

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