6a-a=7a-2+4

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Solution for 6a-a=7a-2+4 equation: 



6a-a=7a-2+4

We move all terms to the left:

6a-a-(7a-2+4)=0

We add all the numbers together, and all the variables

6a-a-(7a+2)=0

We add all the numbers together, and all the variables

5a-(7a+2)=0

We get rid of parentheses

5a-7a-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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