Answer:
Step-by-step explanation:
Do not confuse the GCF with the Least Common Denominator (LCD) which is the smallest expression that all terms go into, rather than the greatest number
The answer is n=(a-b)-1 because when you subtract a-b, you get almost the number of pages, but as you are counting the page b which has is not torn out, you must subtract 1 to get the correct answer if you plugged in a variable
N/17 = 70/50
Simplify the fraction on the right
n/17 = 7/5
Multiply both sides by 17 to isolate "n" on the left
n = 119/5
Answer choice (A) is correct.
