5a-12=a-20

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Solution for 5a-12=a-20 equation: 



5a-12=a-20

We move all terms to the left:

5a-12-(a-20)=0

We get rid of parentheses

5a-a+20-12=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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