Răspuns: 112 kg de rosii si 20 de ladite
Explicație pas cu pas:
Notez numar ladite cu ,,a"
3 x a + 52 → raman 52 kg daca se pun cate 3 kg in lada
7 x ( a - 4 ) → raman 4 lazi goale, daca se aseaza cate 7 kg in lada
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7 x ( a - 4 ) = 3 x a + 52 → kg rosii
7 x a - 28 = 3 x a + 52
7 x a - 3 x a = 52 + 28
4 x a = 80
a = 80 : 4
a = 20 ladite
20 x 3 + 52 = 60 + 52 = 112 kg de rosii
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Verific: 7 x ( 20 - 4 ) = 7 x 16 = 112 kg rosii
