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x -samochody
5*x + 2*y = 40
5*x = 40 - 2*y / : 5
x = 8 - (2*y) / 5
5 * 2y / 5 + 2y = 40
4y = 40
y = 10
5x + 2*10 = 40
5x = 40 - 20
5x = 20
x = 4
Odp . Na parkingu stoi 10 motocykli i 4 samochody
Liczę na naj ; 3