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294=-u+79
We move all terms to the left:
294-(-u+79)=0
We add all the numbers together, and all the variables
-(-1u+79)+294=0
We get rid of parentheses
1u-79+294=0
We add all the numbers together, and all the variables
u+215=0
We move all terms containing u to the left, all other terms to the right
u=-215
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