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4/y+9=5
We move all terms to the left:
4/y+9-(5)=0
Domain of the equation: y!=0We add all the numbers together, and all the variables
y∈R
4/y+4=0
We multiply all the terms by the denominator
4*y+4=0
We add all the numbers together, and all the variables
4y+4=0
We move all terms containing y to the left, all other terms to the right
4y=-4
y=-4/4
y=-1
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