-42=a/2

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Solution for -42=a/2 equation: 



-42=a/2

We move all terms to the left:

-42-(a/2)=0

We add all the numbers together, and all the variables

-(+a/2)-42=0

We get rid of parentheses

-a/2-42=0

We multiply all the terms by the denominator


-a-42*2=0

We add all the numbers together, and all the variables

-1a-84=0

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

-a=84

a=84/-1

a=-84

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