ada yang tau + cara 1. 4/9 + 3 2/6 =.... 2. 1/12 + 11 7/20 =.... terimakasih :)

4/9 + 3 2/6 = 4/9 + 20/6 = 8/18 + 60/18 = 68/18 = 3 14/18 = 3 7/9
1/12 + 11 7/20 = 1/12 + 227/20 = 5/60 + 681/60 = 686/60 = 11 26/60 = 11 13/30