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0.129y-30+0.20y=0.16y-0.01(40)
We move all terms to the left:
0.129y-30+0.20y-(0.16y-0.01(40))=0
We add all the numbers together, and all the variables
0.129y+0.20y-(0.16y-0.014)-30=0
We add all the numbers together, and all the variables
0.329y-(0.16y-0.014)-30=0
We get rid of parentheses
0.329y-0.16y+0.014-30=0
We add all the numbers together, and all the variables
0.169y-29.986=0
We move all terms containing y to the left, all other terms to the right
0.169y=29.986
y=29.986/0.169
y=177+0.073/0.169
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