3*10+y=80

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Solution for 3*10+y=80 equation: 



3*10+y=80

We move all terms to the left:

3*10+y-(80)=0

determiningTheFunctionDomain
y-80+3*10=0

We add all the numbers together, and all the variables

y-50=0

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

y=50

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