Răspuns :
|__| + 4 + |__|__|__| = 20
4 * |__| = 20 - 4 = 16
|__| = 16 : 4 = 4
Raspuns: 4 !
proba: 4 + 4 + 3×4 = 20 (A)
4 * |__| = 20 - 4 = 16
|__| = 16 : 4 = 4
Raspuns: 4 !
proba: 4 + 4 + 3×4 = 20 (A)