Question

the sun of the digits of a 2 digit number is 7 , if the digit are reversed , the number formed is 9 less than the original number . Find th3 number. this is for std 8​

Answer 1

Answer:

Take the no xy. this means 10x+y( expansion form).

reverse the digits then the no is yx

yx= 10y+ x

the difference = 9x-9y

in the question the difference is given

9(x-y) = 9

so x-y =1,

sum of the digits is x+y = 7

from the 2 statement s x=4, y=3

finally the no is 43

Step-by-step explanation:

mark as brainliest answer.