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6=-9/2u
We move all terms to the left:
6-(-9/2u)=0
Domain of the equation: 2u)!=0We get rid of parentheses
u!=0/1
u!=0
u∈R
9/2u+6=0
We multiply all the terms by the denominator
6*2u+9=0
Wy multiply elements
12u+9=0
We move all terms containing u to the left, all other terms to the right
12u=-9
u=-9/12
u=-3/4
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