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0.2y+8.5-3.5=-5
We move all terms to the left:
0.2y+8.5-3.5-(-5)=0
We add all the numbers together, and all the variables
0.2y+10=0
We move all terms containing y to the left, all other terms to the right
0.2y=-10
y=-10/0.2
y=-50
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