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-u/2=-49
We move all terms to the left:
-u/2-(-49)=0
We add all the numbers together, and all the variables
-u/2+49=0
We multiply all the terms by the denominator
-u+49*2=0
We add all the numbers together, and all the variables
-1u+98=0
We move all terms containing u to the left, all other terms to the right
-u=-98
u=-98/-1
u=+98
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