9a-10=3a+20

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Solution for 9a-10=3a+20 equation: 



9a-10=3a+20

We move all terms to the left:

9a-10-(3a+20)=0

We get rid of parentheses

9a-3a-20-10=0

We add all the numbers together, and all the variables

6a-30=0

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

6a=30

a=30/6

a=5

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