1/2 minus 3/7 is 1/14
1/7 + 1/3 = 3/21 + 7/21 = 10/21
7 1/3
(1/3)/(7/15) = 1/(7/5) = 5/7
1
1 over 3 7/21 = 1/3
3/7 × 1/8 = 3/56
3/7 is bigger because 3/7 = 9/21 and 1/3 = 7/21
7 over 20 is (7/20) 0.35 1 over 3 is (1/3) 0.3333. repeated decimal.
4/7 + 3/7 = 1
3/4+1/7 = 25/28
3/7 x -1/4 = -3/28
3 ÷ 1/7 = 21