3u+20+14u=21u-8

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Solution for 3u+20+14u=21u-8 equation: 



3u+20+14u=21u-8

We move all terms to the left:

3u+20+14u-(21u-8)=0

We add all the numbers together, and all the variables

17u-(21u-8)+20=0

We get rid of parentheses

17u-21u+8+20=0

We add all the numbers together, and all the variables

-4u+28=0

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

-4u=-28

u=-28/-4

u=+7

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