20-9=10a-2

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Solution for 20-9=10a-2 equation: 



20-9=10a-2

We move all terms to the left:

20-9-(10a-2)=0

We add all the numbers together, and all the variables

-(10a-2)+11=0

We get rid of parentheses

-10a+2+11=0

We add all the numbers together, and all the variables

-10a+13=0

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

-10a=-13

a=-13/-10

a=1+3/10

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