Arthur Wright answered 72/84 divided by 2 is 36/42 divided by 2 again is 18/21 but this time is divisible by 3 which becomes 6/7 and no number goes into both equally so the lowest term of 72/84 is 6/7

Oddman answered 72/84 = (2^{3}*3^{2})/(2^{2}*3*7) = (2*3)/7 = 6/7_____72/84 = (6*12)/(7*12) = (6/7)*(12/12) = 6/7