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13y+3=19-8y
We move all terms to the left:
13y+3-(19-8y)=0
We add all the numbers together, and all the variables
13y-(-8y+19)+3=0
We get rid of parentheses
13y+8y-19+3=0
We add all the numbers together, and all the variables
21y-16=0
We move all terms containing y to the left, all other terms to the right
21y=16
y=16/21
y=16/21
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