Question

Select the correct answer. The sum of two consecutive numbers is 157. This equation, where n is the first number, represents the situation: 2n + 1 = 157. What is the first number? A. 77 B. 78 C. 79 D. 80

Answer 1

The answer is B. 78
2n+1=157
2(78)+1=157

Answer 2

Rearrange the equation 2n + 1 = 157

2n = 156

n = 156/2

n = 78