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CBSE Class 9 Answered

A two digit number is 1 less than twice the number obtained after reversing the digits. Form a linear equation in two variables for the given situation and express it in standard form.
Asked by dbijraj.saikia | 20 Aug, 2020, 07:39: PM
answered-by-expert Expert Answer
Let x and y be the digits at ten's and one's place respectively
So, the number is 10x+y
As per the condition, 
10x+y=2(10y+x)-1
10x + y = 20y + 2x - 1
8x - 19y + 1 = 0
Answered by Renu Varma | 21 Aug, 2020, 12:15: PM

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