tolong jawab ya kak ?????pake cara

Smoga dapat membantu......

1. 1 - 3/4 = 4/4 - 3/4 = 1/4
2. 3 - 3/4 = 12/4 - 3/4 = 9/4 = 2 1/4
3. 5 - 4/5 = 25/5 - 4/5 = 21/5 = 4 1/5
4. 20 - 5/10 = 20 - 1/2 = 40/2 - 1/2 = 39/2 =18 1/2