3a-1=9-2a

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Solution for 3a-1=9-2a equation: 



3a-1=9-2a

We move all terms to the left:

3a-1-(9-2a)=0

We add all the numbers together, and all the variables

3a-(-2a+9)-1=0

We get rid of parentheses

3a+2a-9-1=0

We add all the numbers together, and all the variables

5a-10=0

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

5a=10

a=10/5

a=2

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