Question

the sum of the digits of a two-digit number is 9. Also the difference between this number and the number obtained by reversing the order of the digits is 45. Represent the above statements by two linear equations in two variables​

Answer 1

Answer:

x+y=9

10x+y=(10y+x)-45

Explanation:

let the no. be 10y+x

(cause it is a 2digit no.)

and no. after revesing the order be 10x+y

Answer 2

Answer:

let the variable at 10's place be x and units place be y

According to given condition 1,

10x+y=9

After interchanging the digits it becomes 10y+x

According to given condition 2,

9x-9y=45

these are the two equations of two variables

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