21=x/9+7

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Solution for 21=x/9+7 equation: 



21=x/9+7

We move all terms to the left:

21-(x/9+7)=0

We get rid of parentheses

-x/9-7+21=0

We multiply all the terms by the denominator


-x-7*9+21*9=0

We add all the numbers together, and all the variables

-1x+126=0

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

-x=-126

x=-126/-1

x=+126

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