481,92:12-20.16=20 1) 481,92:12=40,16 2) 40,16-20,16=20 1,08*30,5-9,72:2,4= 1)1,08*30,5=32,94 2) 9,72:2,4=4,05 3)32,94-4,05=28,89
1) 481,92:12=40,16 40,16-20,16=20 2) 1,08*30,5=32,94 9,72;2,4=4,05 32,94-4.05=28,89