Question

the sum of a two digit no. and the number obtained by reversing it's digit is 121.If units and tens digits of the no. are x and y resp. ,then write the linear equation in two variables representing the above statement.

Answer 1

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HERE IS UR ANSWER _____

LET TWO DIGIT NO. BE 10 y + x

ACCORDING TO FIRST CONDITION ,

=> 10 y + x + 10 x + y = 121

=> 11 y + 11 x = 121

=> 11 ( x + y ) = 121

=> x + y = 11

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