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0.8y-0.9=0.5-0.3y
We move all terms to the left:
0.8y-0.9-(0.5-0.3y)=0
We add all the numbers together, and all the variables
0.8y-(-0.3y+0.5)-0.9=0
We get rid of parentheses
0.8y+0.3y-0.5-0.9=0
We add all the numbers together, and all the variables
1.1y-1.4=0
We move all terms containing y to the left, all other terms to the right
1.1y=1.4
y=1.4/1.1
y=1+0.3/1.1
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