12+18u=10u-8+9u

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Solution for 12+18u=10u-8+9u equation: 



12+18u=10u-8+9u

We move all terms to the left:

12+18u-(10u-8+9u)=0

We add all the numbers together, and all the variables

18u-(19u-8)+12=0

We get rid of parentheses

18u-19u+8+12=0

We add all the numbers together, and all the variables

-1u+20=0

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

-u=-20

u=-20/-1

u=+20

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