Răspuns :
AxB=1530 A=1530\B
(A-20)xB=1530
(1530\B-20)xB=1530
1530-20B=1530
3060=20B
B=153
A=1530\153
A=10
a * b = 1530, rezulta a = 1530 : b
(a - 20) * b = 850
(1530 : b - 20) * b = 850
1530 - 20b = 850
20b = 1530 - 850 = 680
b = 680 : 20 = 34
a = 1530 : b = 1530 : 34 = 45
Raspuns; a = 45
b = 34
(a - 20) * b = 850
(1530 : b - 20) * b = 850
1530 - 20b = 850
20b = 1530 - 850 = 680
b = 680 : 20 = 34
a = 1530 : b = 1530 : 34 = 45
Raspuns; a = 45
b = 34