4a-5=2a+7a=

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Solution for 4a-5=2a+7a= equation: 



4a-5=2a+7a=

We move all terms to the left:

4a-5-(2a+7a)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

4a-9a-5=0

We add all the numbers together, and all the variables

-5a-5=0

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

-5a=5

a=5/-5

a=-1

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