Răspuns :
a × 25 = 2225
a = 2225 : 25
a = 89
b : 14 = 106
b = 106 × 14
b = 1484
1872 : c = 12
c = 1872: 12
c = 156
( d + 5 ) × 22 = 484
d + 5 = 484 : 22
d + 5 = 22
d = 22 - 5
d = 17
a = 2225 : 25
a = 89
b : 14 = 106
b = 106 × 14
b = 1484
1872 : c = 12
c = 1872: 12
c = 156
( d + 5 ) × 22 = 484
d + 5 = 484 : 22
d + 5 = 22
d = 22 - 5
d = 17