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-5/4u=15
We move all terms to the left:
-5/4u-(15)=0
Domain of the equation: 4u!=0We multiply all the terms by the denominator
u!=0/4
u!=0
u∈R
-15*4u-5=0
Wy multiply elements
-60u-5=0
We move all terms containing u to the left, all other terms to the right
-60u=5
u=5/-60
u=-1/12
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