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-28.8=u/8-3.2
We move all terms to the left:
-28.8-(u/8-3.2)=0
We get rid of parentheses
-u/8+3.2-28.8=0
We multiply all the terms by the denominator
-u+(3.2)*8-(28.8)*8=0
We add all the numbers together, and all the variables
-1u-204.8=0
We move all terms containing u to the left, all other terms to the right
-u=204.8
u=204.8/-1
u=-204+0.80000000000001/1
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