11/521/2 = 2.110.5 = 21
2 1/43 1/3 = 9/410/3 = 90/12 = 7.5
-5 5/112 1/5 = -60/1111/5 = -660/55 = -12
-12/13*(-26/27) = 312/351 = 104/117 = 0.8889
7/25:1,4 = 7/25 * 4/1 = 28/25 = 1.12
11/521/2 = 2.110.5 = 21
2 1/43 1/3 = 9/410/3 = 90/12 = 7.5
-5 5/112 1/5 = -60/1111/5 = -660/55 = -12
-12/13*(-26/27) = 312/351 = 104/117 = 0.8889
7/25:1,4 = 7/25 * 4/1 = 28/25 = 1.12