Question

in a 2 digit number sum of two digit is 7 of the difference of two digit number and number obtained by reversing the degit is 9 find the numbers
Ms. Sue
0, 7
1, 6
2, 5
3, 4

Which of those combinations meets the second criterion?

Let m be the ten digit, and n be the ones. Then:
m+n=7
(10m+n)-(10n+m)=9
Then:
10m-10n+n-m=9
Solve for m and n
☺☺☺☺

Related Questions

The number uses every number 0-9 the numbers are used only once the fourth digit is 4 the first digi... It is a 7-digit number It has a digit 0. The greatest digit is in the hundred thousands place. Th... Q=if a three 3 digit units digit tense digit hundreds digit are in the ratio 1:2:3.if the difference... aminah thinks of a 4-digit number. what is the number? every digit is different. the sum of the...