Question

Evaluate 15/r-1 when r=5

Answer 1

Answer: 15/5=3 3-1= 2

The answer would be 2. :P

Answer 2

15/r-1 when r=5

15 /(5-1)

15 / 4

3 3/4

15/r-1 when r=5

15 /5   -1

3 -1

2

it depends on whether the entire term is in the denominator