Question

The sum of the digits of a two digit number is 7 when the digits are reversed then number is decreased by 9.find the number​

Answer 1

the answer is -2

please mark the answer as brainliest

Answer 2

Answer:

43

Step-by-step explanation:

x+y=7   x=7-y

(10x+y)-9=10y+x

or, 9x-9y=9

or,x-y=1

or,7-y-y=1

or,-2y=-6

or,y=3

x=4

the original no is=10x+y=40+3=43(Ans)