-21=4-x/2

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Solution for -21=4-x/2 equation: 



-21=4-x/2

We move all terms to the left:

-21-(4-x/2)=0

We add all the numbers together, and all the variables

-(-x/2+4)-21=0

We get rid of parentheses

x/2-4-21=0

We multiply all the terms by the denominator


x-4*2-21*2=0

We add all the numbers together, and all the variables

x-50=0

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

x=50

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