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4=19-5y
We move all terms to the left:
4-(19-5y)=0
We add all the numbers together, and all the variables
-(-5y+19)+4=0
We get rid of parentheses
5y-19+4=0
We add all the numbers together, and all the variables
5y-15=0
We move all terms containing y to the left, all other terms to the right
5y=15
y=15/5
y=3
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