11a-21=17-8a

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Solution for 11a-21=17-8a equation: 



11a-21=17-8a

We move all terms to the left:

11a-21-(17-8a)=0

We add all the numbers together, and all the variables

11a-(-8a+17)-21=0

We get rid of parentheses

11a+8a-17-21=0

We add all the numbers together, and all the variables

19a-38=0

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

19a=38

a=38/19

a=2

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