Răspuns :
a). a × 9 = 396
a = 396 : 9
a = 44
b). b × 9 = 153
b= 153 : 9
b = 17
c). a × 9 = 558
a = 558 : 9
a = 62
d). b × 9 = 684
b = 684 : 9
b = 76
a). a × 9 = 396
a = 396 : 9
a = 44
b). b × 9 = 153
b= 153 : 9
b = 17
c). a × 9 = 558
a = 558 : 9
a = 62
d). b × 9 = 684
b = 684 : 9
b = 76