0.8*7.5-y=3

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Solution for 0.8*7.5-y=3 equation: 



0.8*7.5-y=3

We move all terms to the left:

0.8*7.5-y-(3)=0

determiningTheFunctionDomain
-y-3+0.8*7.5=0

We add all the numbers together, and all the variables

-1y+3=0

We move all terms containing y to the left, all other terms to the right

-y=-3

y=-3/-1

y=+3

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