5a-15+9a=9a+20

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Solution for 5a-15+9a=9a+20 equation: 



5a-15+9a=9a+20

We move all terms to the left:

5a-15+9a-(9a+20)=0

We add all the numbers together, and all the variables

14a-(9a+20)-15=0

We get rid of parentheses

14a-9a-20-15=0

We add all the numbers together, and all the variables

5a-35=0

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

5a=35

a=35/5

a=7

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