c ) Au suma 1089 si c.m.m.d.c. al lor este 121.
a + b = 1089
a = 121x
b = 121y
121x + 121y = 1089
121 ( x+y) = 1089
x + y = 1089 : 121
x + y = 9
x = 1 y = 8 a = 121 b = 968
x = 2 y = 7 a = 242 b = 847
x = 3 y = 6 a = 363 b = 726
x = 4 y = 5 a = 484 b = 605