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-5.2+0.4y=2
We move all terms to the left:
-5.2+0.4y-(2)=0
We add all the numbers together, and all the variables
0.4y-7.2=0
We move all terms containing y to the left, all other terms to the right
0.4y=7.2
y=7.2/0.4
y=18
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