Question

The sum of the digits of two digit number is 12. If 18 is added to it , the digits reversed . Find the number . By linear equations in one variable.

Answer 1

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Answer:

57

Step-by-step explanation:

let the tens digit be x

then automatically one's digit becomes 12-x

hence number becomes

10x+12-x=9x+12

9x+12+18=10×(12-x)+x

9x+30=120-9x

18x=90

x=5

hence the number is 57

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Answer 2

Answer:

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