Question

the sum of the digit in a two digit number is 9 If 45 is added to the number ' the digits are interchanged. find the number​

Answer 1

Answer:

45+9=54

Step-by-step explanation:

Just add

Thank you

Answer 2

Answer:

let be

ones digit=x

tense digit=9-x

10(9-x)+x =10*x+9-x+45

90-10x+x=10x+9-x+45

90-9x=9x+9+45

90-9x=9x+54

90-54=9x+9x

36=18x

x=36÷18

x=2

ones digit=2

Tense digit=9-2=7

interchanged no. is 72