21=u/2+10

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Solution for 21=u/2+10 equation: 



21=u/2+10

We move all terms to the left:

21-(u/2+10)=0

We get rid of parentheses

-u/2-10+21=0

We multiply all the terms by the denominator


-u-10*2+21*2=0

We add all the numbers together, and all the variables

-1u+22=0

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

-u=-22

u=-22/-1

u=+22

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