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20=-5/2y
We move all terms to the left:
20-(-5/2y)=0
Domain of the equation: 2y)!=0We get rid of parentheses
y!=0/1
y!=0
y∈R
5/2y+20=0
We multiply all the terms by the denominator
20*2y+5=0
Wy multiply elements
40y+5=0
We move all terms containing y to the left, all other terms to the right
40y=-5
y=-5/40
y=-1/8
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