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5.1y+21.3=-0.3y-246
We move all terms to the left:
5.1y+21.3-(-0.3y-246)=0
We get rid of parentheses
5.1y+0.3y+246+21.3=0
We add all the numbers together, and all the variables
5.4y+267.3=0
We move all terms containing y to the left, all other terms to the right
5.4y=-267.3
y=-267.3/5.4
y=-49+2.7/5.4
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