SOLUTION: seventeen more than three times mary's number is eighty . what is mary's number?

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Question 679107: seventeen more than three times mary's number is eighty . what is mary's number?


Answer by rm29924(97) About Me  (Show Source):
You can put this solution on YOUR website!
Let X = Mary's number
three times Mary's number is 3X
seventeen more means we add 17 to it
3X+17=80
subtract 17 from both sides
3X=63
divide 3 from both sides to get the variable X by itself
X=21
Mary's number is 21.