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(7.2-2.2y)+55y=180
We move all terms to the left:
(7.2-2.2y)+55y-(180)=0
We add all the numbers together, and all the variables
(-2.2y+7.2)+55y-180=0
We add all the numbers together, and all the variables
55y+(-2.2y+7.2)-180=0
We get rid of parentheses
55y-2.2y+7.2-180=0
We add all the numbers together, and all the variables
52.8y-172.8=0
We move all terms containing y to the left, all other terms to the right
52.8y=172.8
y=172.8/52.8
y=3+5.9999999999999/22
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