Asked by Rmz
two 2-digit numbers have the same digits. Their sum is 77 and their difference is 27. What are the numbers? What stratagey did u use?
Answers
Answered by
Ian
x1 + x2 = 77
x2 - x1 = 27
x2 = 27 + x1
x1 + (27 + x1) = 77
2 x1 = 50
x1 = 25
x2 = 52
x2 - x1 = 27
x2 = 27 + x1
x1 + (27 + x1) = 77
2 x1 = 50
x1 = 25
x2 = 52
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