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-6+7y=-20.
We move all terms to the left:
-6+7y-(-20.)=0
We add all the numbers together, and all the variables
7y-6-(-20)=0
We add all the numbers together, and all the variables
7y+14=0
We move all terms containing y to the left, all other terms to the right
7y=-14
y=-14/7
y=-2
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