u/2-9=21

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Solution for u/2-9=21 equation: 



u/2-9=21

We move all terms to the left:

u/2-9-(21)=0

We add all the numbers together, and all the variables

u/2-30=0

We multiply all the terms by the denominator


u-30*2=0

We add all the numbers together, and all the variables

u-60=0

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

u=60

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