SOLUTION: i am thinking of number i multiply it by 5 and add 77 i get the same answer if i multiply by 8 and subtract 7 what is my number?

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Question 376982: i am thinking of number i multiply it by 5 and add 77 i get the same answer if i multiply by 8 and subtract 7 what is my number?
Answer by bostonmathtutor(8) About Me  (Show Source):
You can put this solution on YOUR website!
First, we set up the equality denoting this mystery number as X:
5X + 77 = 8X - 7
Combine like terms:
84 = 3X
28 = X