a+11a=-5a+21

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Solution for a+11a=-5a+21 equation: 



a+11a=-5a+21

We move all terms to the left:

a+11a-(-5a+21)=0

We add all the numbers together, and all the variables

12a-(-5a+21)=0

We get rid of parentheses

12a+5a-21=0

We add all the numbers together, and all the variables

17a-21=0

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

17a=21

a=21/17

a=1+4/17

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