8u-21=2u-2

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Solution for 8u-21=2u-2 equation: 



8u-21=2u-2

We move all terms to the left:

8u-21-(2u-2)=0

We get rid of parentheses

8u-2u+2-21=0

We add all the numbers together, and all the variables

6u-19=0

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

6u=19

u=19/6

u=3+1/6

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