-7=21-x/4

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Solution for -7=21-x/4 equation: 



-7=21-x/4

We move all terms to the left:

-7-(21-x/4)=0

We add all the numbers together, and all the variables

-(-x/4+21)-7=0

We get rid of parentheses

x/4-21-7=0

We multiply all the terms by the denominator


x-21*4-7*4=0

We add all the numbers together, and all the variables

x-112=0

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

x=112

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