u/4+16=21

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Solution for u/4+16=21 equation: 



u/4+16=21

We move all terms to the left:

u/4+16-(21)=0

We add all the numbers together, and all the variables

u/4-5=0

We multiply all the terms by the denominator


u-5*4=0

We add all the numbers together, and all the variables

u-20=0

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

u=20

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