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1 and 20.
the 2 numbers are 51 and 19
72 plus 19 = 91
Name the two numbers x & y , you can form these equations:x + y = 21x - y = 19Solve the system by substitution:x - y = 19 --> x = 19 + y19 + y + y = 2119 + 2y = 212y = 2y = 1But, X + y = 21X + 1 = 21x = 20
The numbers are: (19+square root of 131) and (19-square root of 131)