21=x/5-10

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Solution for 21=x/5-10 equation: 



21=x/5-10

We move all terms to the left:

21-(x/5-10)=0

We get rid of parentheses

-x/5+10+21=0

We multiply all the terms by the denominator


-x+10*5+21*5=0

We add all the numbers together, and all the variables

-1x+155=0

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

-x=-155

x=-155/-1

x=+155

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