-a-3a+5=-9a+7

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Solution for -a-3a+5=-9a+7 equation: 



-a-3a+5=-9a+7

We move all terms to the left:

-a-3a+5-(-9a+7)=0

We add all the numbers together, and all the variables

-4a-(-9a+7)+5=0

We get rid of parentheses

-4a+9a-7+5=0

We add all the numbers together, and all the variables

5a-2=0

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

5a=2

a=2/5

a=2/5

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