5-2a=a-7

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Solution for 5-2a=a-7 equation: 



5-2a=a-7

We move all terms to the left:

5-2a-(a-7)=0

We get rid of parentheses

-2a-a+7+5=0

We add all the numbers together, and all the variables

-3a+12=0

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

-3a=-12

a=-12/-3

a=+4

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