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u/2=-51
We move all terms to the left:
u/2-(-51)=0
We add all the numbers together, and all the variables
u/2+51=0
We multiply all the terms by the denominator
u+51*2=0
We add all the numbers together, and all the variables
u+102=0
We move all terms containing u to the left, all other terms to the right
u=-102
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