SOLUTION: Can you please refresh my memory...the problem reads...the sum of the digits of a two digit number is 7. The tens' digit is 3 more than the ones' digit. What is the number?

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Question 335609: Can you please refresh my memory...the problem reads...the sum of the digits of a two digit number is 7. The tens' digit is 3 more than the ones' digit. What is the number?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let the number be AB.
1.A%2BB=7
2.A=B%2B3
Substitute eq. 2 into eq. 1, solve for B.
Now that you have B, then use eq. 2 to solve for A.