7a=3a-20

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Solution for 7a=3a-20 equation: 



7a=3a-20

We move all terms to the left:

7a-(3a-20)=0

We get rid of parentheses

7a-3a+20=0

We add all the numbers together, and all the variables

4a+20=0

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

4a=-20

a=-20/4

a=-5

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