-39-a/2=21

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Solution for -39-a/2=21 equation: 



-39-a/2=21

We move all terms to the left:

-39-a/2-(21)=0

We add all the numbers together, and all the variables

-a/2-60=0

We multiply all the terms by the denominator


-a-60*2=0

We add all the numbers together, and all the variables

-1a-120=0

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

-a=120

a=120/-1

a=-120

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