6a-25=a+20

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Solution for 6a-25=a+20 equation: 



6a-25=a+20

We move all terms to the left:

6a-25-(a+20)=0

We get rid of parentheses

6a-a-20-25=0

We add all the numbers together, and all the variables

5a-45=0

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

5a=45

a=45/5

a=9

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