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3.3=-19.1+7u
We move all terms to the left:
3.3-(-19.1+7u)=0
We add all the numbers together, and all the variables
-(7u-19.1)+3.3=0
We get rid of parentheses
-7u+19.1+3.3=0
We add all the numbers together, and all the variables
-7u+22.4=0
We move all terms containing u to the left, all other terms to the right
-7u=-22.4
u=-22.4/-7
u=3+1/5
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