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9 Linear Equations in Two Unknowns 9. The sum of the digits of a two-digit positive integer is 12. If the value of the integer

9 Linear Equations in Two Unknowns 9. The sum of the digits of a two-digit positive integer is 12. If the value of the integer is increased by 36 when its digits are reversed, find the original integer. Solution Let c and y be the two-digit Tips

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