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28=-5/4u
We move all terms to the left:
28-(-5/4u)=0
Domain of the equation: 4u)!=0We get rid of parentheses
u!=0/1
u!=0
u∈R
5/4u+28=0
We multiply all the terms by the denominator
28*4u+5=0
Wy multiply elements
112u+5=0
We move all terms containing u to the left, all other terms to the right
112u=-5
u=-5/112
u=-5/112
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