Question

The sum of the digits of a 2-digit number is 7. If the digits are
reversed, the number formed is 9 less than the original number. Find
the number​

Answer 1

Step-by-step explanation:

Let the ones's digit =x.

So, sum of the digits =7

Tens's digit =7−x

Original no. =10(7−x)+x=70−10x+x=70−9x

Reversed no. =10x+7−x=9x+7

2(orig no) = reversed no. −2

2(70−9x)=9x+7−2140−18x=9x+527x=135x=5

Ten's digit =7−5=2

No. =25

Answer 2

Answer:

25....................