4a+5=6a-21

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Solution for 4a+5=6a-21 equation: 



4a+5=6a-21

We move all terms to the left:

4a+5-(6a-21)=0

We get rid of parentheses

4a-6a+21+5=0

We add all the numbers together, and all the variables

-2a+26=0

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

-2a=-26

a=-26/-2

a=+13

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