Question

que alguien me ayude

Answer 1

3/6 + 3/12 = 6/12+3/12 = 9/12

4/12 + 2/4 = 4/12 + 6/12 = 10/12

3/2 - 10/12 = 18/12 - 10/12 = 8/12

11/12 - 2/3 = 11/12 - 8/12 = 3/12