-7a-+21=11-7a

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Solution for -7a-+21=11-7a equation: 



-7a-+21=11-7a

We move all terms to the left:

-7a-+21-(11-7a)=0

We add all the numbers together, and all the variables

-7a-(-7a+11)+21-=0

We add all the numbers together, and all the variables

-7a-(-7a+11)=0

We get rid of parentheses

-7a+7a-11=0

We add all the numbers together, and all the variables

-11!=0

There is no solution for this equation

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