7a+2=5,a

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Solution for 7a+2=5,a equation: 



7a+2=5.a

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

7a-5.a+2=0

We add all the numbers together, and all the variables

2a+2=0

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

2a=-2

a=-2/2

a=-1

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