Answer: Numbers 6 and 7
Step-by-step explanation: Suppose the number is X.
The number after X is X+1.
X + X + 1 = 13
2X + 1 = 13
2X = 13 - 1
2X = 12
X = [tex]\frac{12}{2}[/tex]
X = 6
The number after 6 is 7 or:
X + 1 = 6 + 1 = 7
Therefore,
X = 6 and X + 1 = 7
