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-11.5=u/8+1.3
We move all terms to the left:
-11.5-(u/8+1.3)=0
We get rid of parentheses
-u/8-1.3-11.5=0
We multiply all the terms by the denominator
-u-(1.3)*8-(11.5)*8=0
We add all the numbers together, and all the variables
-1u-102.4=0
We move all terms containing u to the left, all other terms to the right
-u=102.4
u=102.4/-1
u=-102+0.40000000000001/1
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