Răspuns: 5 vaze si 18 flori
Explicație pas cu pas:
v = numar vaze ( total )
3 × v + 3 → cate 3 flori in vaza, raman 3 flori
6 × ( v - 2 ) → cate 6 flori in vaza, raman 2 vaze libere ( goale)
_______________________________________________
6 × v - 12 = 3 × v + 3
6 × v - 3 × v = 3 + 12
3 × v = 15
v = 15 : 3
v = 5 vaze
3 × 5 + 3 = 18 flori
________________
6 × ( 5 - 2 ) = 6 × 3 = 18 flori