The sum of the two digit number is 12. If the digit are revesed, then the new number is 18 less than the originaol muber that is the number?

Question

asked Dec 4, 2020 134k views

1 Answer

ClusterH · Answer 1 · 2020-12-11T06:36:55+0000

Answer:

A) X + Y = 12

B) 10Y + x = 10x + Y -18

B) 9Y = 9x -18 multiplying A) by -9

A) -9Y = 9x - 72 adding A and B we get

0 = 18x -90

x = 5

The number is 75

Double-Check

7 + 5 = 12

75 -57 = 18

Explanation: