the product of two 2-digit numbers 12.if the digit are reversed ,the new numbet decreass by 36.find the number.
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Let the tens digit is x and unit digit is y
The number is 10 x + y
10 x + y -36 = 10 y + x
9 x - 9 y = 36
x - y = 4 ………1
x * y = 12….2
x - 12/x=4 Therefore x = 6,-4
From equation 2, Therefore y = 2,-3
The number is 10*6+2= 62 and =10*-4-3=-43
The number is 10 x + y
10 x + y -36 = 10 y + x
9 x - 9 y = 36
x - y = 4 ………1
x * y = 12….2
x - 12/x=4 Therefore x = 6,-4
From equation 2, Therefore y = 2,-3
The number is 10*6+2= 62 and =10*-4-3=-43
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