3=7+u/2

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Solution for 3=7+u/2 equation: 



3=7+u/2

We move all terms to the left:

3-(7+u/2)=0

We add all the numbers together, and all the variables

-(u/2+7)+3=0

We get rid of parentheses

-u/2-7+3=0

We multiply all the terms by the denominator


-u-7*2+3*2=0

We add all the numbers together, and all the variables

-1u-8=0

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

-u=8

u=8/-1

u=-8

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