3a-13=7a-93

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Solution for 3a-13=7a-93 equation: 



3a-13=7a-93

We move all terms to the left:

3a-13-(7a-93)=0

We get rid of parentheses

3a-7a+93-13=0

We add all the numbers together, and all the variables

-4a+80=0

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

-4a=-80

a=-80/-4

a=+20

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