Question

- Sum of digits of a two digit number (xy) is 9, x and y are digits. Digits interchange
their places if 45 is added to the number. Represent the information as pair of
linear equations.​

Answer 1

Step-by-step explanation:

LET THE DIGIT AT TENS PLACE BE X AND UNITS PLACE DIGIT BE Y RESPECTIVELY.

SO,FIRST EQUATION=X+Y=9

AND

SECOND EQUATION=10X+Y+45=10Y+X