5a-1=7a-8

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Solution for 5a-1=7a-8 equation: 



5a-1=7a-8

We move all terms to the left:

5a-1-(7a-8)=0

We get rid of parentheses

5a-7a+8-1=0

We add all the numbers together, and all the variables

-2a+7=0

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

-2a=-7

a=-7/-2

a=3+1/2

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