The sum of a two digit number and the number obtained by interchanging it is121.Give a linear equation for this.
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Let x be the digit in one's place and y be the digit in tenths place.
Original Number = 10y + x
New Number(Formed by interchanging the digits) = 10x + y
Now, By Question, we have the required Linear Equation
(10y + x) + (10x + y) = 121
=> 11x + 11y. = 121
=>11(x +y) = 121
=> x + y. = 11 (Ans)
Original Number = 10y + x
New Number(Formed by interchanging the digits) = 10x + y
Now, By Question, we have the required Linear Equation
(10y + x) + (10x + y) = 121
=> 11x + 11y. = 121
=>11(x +y) = 121
=> x + y. = 11 (Ans)
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