Question

A number consists of two digits whose sum is 9. If 27 is subtracted from the number, its digits are
reversed. Find the number.(one variable method)​

Answer 1

Answer:

x+y =9

x=9-y

10x+y -27= 10y+x

9x -9y = 27

9(9-y) -9y = 27

81-9y -9y =27

-18y = -54

y= 3

then you can find value of x

hope this help you