va roggggggggg frumos

Răspuns:
18:9=2, 27:9=3, 45:9=5, 81:9=9(a)
42-8=34, 56-8=48, 64-8=56, 80-8=52(b)
24:8=3, 32:8=4, 40:8=5, 64:8=8(d)
Sper ca team ajutat! Coronita?