a-7a=-7-5a

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Solution for a-7a=-7-5a equation: 



a-7a=-7-5a

We move all terms to the left:

a-7a-(-7-5a)=0

We add all the numbers together, and all the variables

a-7a-(-5a-7)=0

We add all the numbers together, and all the variables

-6a-(-5a-7)=0

We get rid of parentheses

-6a+5a+7=0

We add all the numbers together, and all the variables

-1a+7=0

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

-a=-7

a=-7/-1

a=+7

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