It is 54 and 32
54 + 32 = 86
54 - 32 = 22
solution:
a + b = 86
a - b = 22 add the two numbers
2a = 108
by multiplication property of equality, divide it to two to cancel out 2a to only a
a = 54
therefore the one digit is 54
54 + b = 86
86 - 54 = b
86 - 54 = 32
therefore the digits are 54 and 32
