zadanie 1
28 + 47 = 75
180 - 75 = 105
75 + 28 = 103
180 - 103 = 77
odp. b
zadanie 2
90 + 23 = 113
180 - 113 = 67
odp. a
zadanie 3
2 * 51 = 102
180 - 102 = 78
odp. c
