9=u-8

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Solution for 9=u-8 equation:



9=u-8
We move all terms to the left:
9-(u-8)=0
We get rid of parentheses
-u+8+9=0
We add all the numbers together, and all the variables
-1u+17=0
We move all terms containing u to the left, all other terms to the right
-u=-17
u=-17/-1
u=+17

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