4a-20=-5a

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Solution for 4a-20=-5a equation: 



4a-20=-5a

We move all terms to the left:

4a-20-(-5a)=0

We get rid of parentheses

4a+5a-20=0

We add all the numbers together, and all the variables

9a-20=0

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

9a=20

a=20/9

a=2+2/9

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