Question

The sum of two consecutive integers is 129. Find the two integers
Let n = first integer and n+1 = second integer

Answer 1

129/2 ≈ 64
64+65 = 129

Answer 2

n + n + 1 = 129

2 n + 1 = 129

Subtract 1 to both sides

2 n = 129 - 1

2 n = 128

n = 128 / 2

n = 64

n + 1 = 64 + 1

n + 1 = 65