nelson1212
contestada

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?

Respuesta :

wolf1728

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





Step-by-step explanation:


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