Răspuns :
a /__/__/__/__/__/__/
b /__/
Suma = 84
84 : 7 = 12 ( b )
12 × 6 = 72 ( a )
Proba : 72 + 12 = 84
b /__/
Suma = 84
84 : 7 = 12 ( b )
12 × 6 = 72 ( a )
Proba : 72 + 12 = 84
a+b = 84
a= 6b
6b + b = 84
7b = 84
b = 84 : 7
b = 12
a = 6 × 12 = 72
a= 6b
6b + b = 84
7b = 84
b = 84 : 7
b = 12
a = 6 × 12 = 72