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Question -

The Sum of a two digit number and the number obtained by reversing the order of its digits is 121. If units and ten’s digit of the number are x and y respectively then write the linear equation representing the above statement.



Answer -

As per the statement given, the number is 10y + x.
On reversing the digits of the number, we get, 10x + y
Sum of the two numbers is 121. (Given)
10y + x + 10x + y = 121
11x + 11y = 121
x + y = 11
Which represents the required linear equation.

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