13 + 9 + (6/3) = 24
9-6 = 3 21-13= 8 8x3 = 24
21 - 13 = 8... 9 - 6 = 3... 8 x 3 = 24
4 6 9 13 18 24 31 39 ...... Add 2 to 4 to get 6 then add 3 to 6 to get 9 then add 4 to 9 to get 13 and so on.
It is 24+7 = 31
1/6 + 3/8 = 4/24 + 9/24 =13/24 13 over 24
18 3 +1 4 +2 6 +3 9 +4 13 +5 18 +6 24 +7 31 +8 39 +9 48 +10 58...
31
9*6/3 + 6 = 9*2 + 6 = 18 + 6 = 24
(6 x 13) - (6 x 9) = 78 - 54 = 24
(1/6) + (3/8) = (4/24) + (9/24) = 13/24
9+3+(-2*-6) = 24
1 and 3 are common factors of 6, 9, and 24.