7a-1=2a-31

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Solution for 7a-1=2a-31 equation: 



7a-1=2a-31

We move all terms to the left:

7a-1-(2a-31)=0

We get rid of parentheses

7a-2a+31-1=0

We add all the numbers together, and all the variables

5a+30=0

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

5a=-30

a=-30/5

a=-6

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