Question

Which of the following numbers could be used as a common denominator for adding the fractions 2/63,-4/35,8/21

Answer 1

fid prime factors of the 3 deomiatots
63 = 3*3*7
21 = 3*7
35 = 5 * 7

7 is commo to all 3 ad is oly used oce
LCM = 3*3*3*5*7 = 27 * 35

Answer 2

- its to that i cat spell - the letter after m o my keyboard is to working
lol

Answer 3

aha its okayy thank you