21=-u+285

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Solution for 21=-u+285 equation:



21=-u+285
We move all terms to the left:
21-(-u+285)=0
We add all the numbers together, and all the variables
-(-1u+285)+21=0
We get rid of parentheses
1u-285+21=0
We add all the numbers together, and all the variables
u-264=0
We move all terms containing u to the left, all other terms to the right
u=264

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