Question

chapter - Linear equation in one variable. -- The sum of the digits of a 2-digit number is 9. On
reversing its digits, the new number obtained is 45
more than the original number. Find the number.
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Answer 1

Step-by-step explanation:

x+y=9(1 eq)

10x+y=10y+x+45(2 eq)

A/Q

9Y-9x=45

x-y=5

x+y=9

x-y=5

_____

2x = 14

x=7

7+y=9

y=2

the new number

20+7=27