Costos
1 litro de leche = L
1 Kg de jamón = J
1 litro de aceite de oliva = A = = = = = = = = = = = = = = =
24L + 6J + 12A = 156
A = 3L
J = 4A + 4L = = = = = = = = = = = = = = =
24L + 6J + 12A = 156
4L - J + 4A = 0
3L - A = 0 = = = = = = = = = = = = = = =
Solucion
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<img src="https://tex.z-dn.net/?f=J%3D%5Cfrac%7B%5Cleft%7C%5Cbegin%7Bmatrix%7D24%26156%2612%5C%5C4%260%264%5C%5C3%260%26-1%5Cend%7Bmatrix%7D%5Cright%7C%7D%7B%5Cleft%7C%5Cbegin%7Bmatrix%7D24%266%2612%5C%5C4%26-1%264%5C%5C3%260%26-1%5Cend%7Bmatrix%7D%5Cright%7C%7D%5C%5C%20%5C%5C%0AJ%3D%5Cfrac%7B16%28156%29%7D%7B156%7D%5C%5C%20%5C%5C%0A%5Cboxed%7BJ%3D16%7D" />
<img src="https://tex.z-dn.net/?f=%5Cdisplaystyle%0AA%3D%5Cfrac%7B%5Cleft%7C%5Cbegin%7Bmatrix%7D24%266%26156%5C%5C4%26-1%260%5C%5C3%260%260%5Cend%7Bmatrix%7D%5Cright%7C%7D%7B%5Cleft%7C%5Cbegin%7Bmatrix%7D24%266%2612%5C%5C4%26-1%264%5C%5C3%260%26-1%5Cend%7Bmatrix%7D%5Cright%7C%7D%5C%5C%20%5C%5C%0AA%3D%5Cfrac%7B3%28156%29%7D%7B156%7D%5C%5C%20%5C%5C%0A%5Cboxed%7BA%3D3%7D" />.