21=u+67/7

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Solution for 21=u+67/7 equation: 



21=u+67/7

We move all terms to the left:

21-(u+67/7)=0

We add all the numbers together, and all the variables

-(+u+67/7)+21=0

We get rid of parentheses

-u+21-67/7=0

We multiply all the terms by the denominator


-u*7-67+21*7=0

We add all the numbers together, and all the variables

-u*7+80=0

Wy multiply elements

-7u+80=0

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

-7u=-80

u=-80/-7

u=11+3/7

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