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Lubov Fominskaja [6]

2 years ago

10

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?

1 answer:

FromTheMoon [43]2 years ago

6 0

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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