6a+7=2a-1

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Solution for 6a+7=2a-1 equation: 



6a+7=2a-1

We move all terms to the left:

6a+7-(2a-1)=0

We get rid of parentheses

6a-2a+1+7=0

We add all the numbers together, and all the variables

4a+8=0

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

4a=-8

a=-8/4

a=-2

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