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34=28-0.4y
We move all terms to the left:
34-(28-0.4y)=0
We add all the numbers together, and all the variables
-(-0.4y+28)+34=0
We get rid of parentheses
0.4y-28+34=0
We add all the numbers together, and all the variables
0.4y+6=0
We move all terms containing y to the left, all other terms to the right
0.4y=-6
y=-6/0.4
y=-15
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