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y=87+0.2/0.4
We move all terms to the left:
y-(87+0.2/0.4)=0
We add all the numbers together, and all the variables
y-(0.2/0.4+87)=0
We get rid of parentheses
y-87-0.2/0.4=0
We multiply all the terms by the denominator
y*0.4-0.2-87*0.4=0
We add all the numbers together, and all the variables
y*0.4-35=0
Wy multiply elements
0.4y-35=0
We move all terms containing y to the left, all other terms to the right
0.4y=35
y=35/0.4
y=87+0.2/0.4
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