u+21/9=7

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Solution for u+21/9=7 equation: 



u+21/9=7

We move all terms to the left:

u+21/9-(7)=0

determiningTheFunctionDomain
u-7+21/9=0

We multiply all the terms by the denominator


u*9+21-7*9=0

We add all the numbers together, and all the variables

u*9-42=0

Wy multiply elements

9u-42=0

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

9u=42

u=42/9

u=4+2/3

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