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3-7y=18-
We move all terms to the left:
3-7y-(18-)=0
We add all the numbers together, and all the variables
-7y+3-0=0
We add all the numbers together, and all the variables
-7y+3=0
We move all terms containing y to the left, all other terms to the right
-7y=-3
y=-3/-7
y=3/7
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