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0.4y=-4.5
We move all terms to the left:
0.4y-(-4.5)=0
We add all the numbers together, and all the variables
0.4y+4.5=0
We move all terms containing y to the left, all other terms to the right
0.4y=-4.5
y=-4.5/0.4
y=-11+0.1/0.4
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