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-8/5+9/2u=-4/7
We move all terms to the left:
-8/5+9/2u-(-4/7)=0
Domain of the equation: 2u!=0We get rid of parentheses
u!=0/2
u!=0
u∈R
9/2u-8/5+4/7=0
We calculate fractions
There is no solution for this equation
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