If a and b are integers, and b > 0, does (a - 1)/(b + 1) = a/b
If a and b are integers, and b > 0, does (a - 1)/(b + 1) = a/b?
- a = b - 4
- a = -b
Answer
(a - 1)/(b + 1) = a/b
ab - b = ab + a
a = -b
You need to determine whether a = -b or not.
Statement 1: a = b - 4
From this statement you cannot determine whether a = -b or not. Hence, statement 1 is not sufficient to answer the question.
Statement 2: a = -b
Statement 2 is sufficient to answer the question.
The correct option is B.