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-28=-4/9y
We move all terms to the left:
-28-(-4/9y)=0
Domain of the equation: 9y)!=0We get rid of parentheses
y!=0/1
y!=0
y∈R
4/9y-28=0
We multiply all the terms by the denominator
-28*9y+4=0
Wy multiply elements
-252y+4=0
We move all terms containing y to the left, all other terms to the right
-252y=-4
y=-4/-252
y=1/63
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