a-7=2a-64

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Solution for a-7=2a-64 equation: 



a-7=2a-64

We move all terms to the left:

a-7-(2a-64)=0

We get rid of parentheses

a-2a+64-7=0

We add all the numbers together, and all the variables

-1a+57=0

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

-a=-57

a=-57/-1

a=+57

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