u+21/7=8

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Solution for u+21/7=8 equation: 



u+21/7=8

We move all terms to the left:

u+21/7-(8)=0

determiningTheFunctionDomain
u-8+21/7=0

We add all the numbers together, and all the variables

u-5=0

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

u=5

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