21u-24=-3u+4

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Solution for 21u-24=-3u+4 equation: 



21u-24=-3u+4

We move all terms to the left:

21u-24-(-3u+4)=0

We get rid of parentheses

21u+3u-4-24=0

We add all the numbers together, and all the variables

24u-28=0

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

24u=28

u=28/24

u=1+1/6

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