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y/2.1=7.2
We move all terms to the left:
y/2.1-(7.2)=0
We add all the numbers together, and all the variables
y/2.1-7.2=0
We multiply all the terms by the denominator
y-(7.2)*2.1=0
We add all the numbers together, and all the variables
y-15.12=0
We move all terms containing y to the left, all other terms to the right
y=15.12
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