Question

Evaluate 15/r - 1 when r = 5

Answer 1

(15/r) - 1...when r = 5

(15/5) - 1 =
3 - 1 =
2 <==

Answer 2

15/r-1=2
do 15/r first. So it's 15/5=3. Next, subtract 1 from that answer and you get 2.