-x/2-12-6=21

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Solution for -x/2-12-6=21 equation: 



-x/2-12-6=21

We move all terms to the left:

-x/2-12-6-(21)=0

We add all the numbers together, and all the variables

-x/2-39=0

We multiply all the terms by the denominator


-x-39*2=0

We add all the numbers together, and all the variables

-1x-78=0

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

-x=78

x=78/-1

x=-78

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