Dwa borsuki waża tyle co trzy lisya dwa lisy waża o 5 kg więcej od jednego borsuka. Ile waży borsuk
x - waga borsuka
y - waga lisa
2x = 3y
x + 5 = 2y
x = 2y - 5
2(2y - 5) = 3y
4y - 10 = 3y
y = 10
x = 20 - 5
x = 15
Odp.: Borsuk waży 15kg.
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x - waga borsuka
y - waga lisa
2x = 3y
x + 5 = 2y
2x = 3y
x = 2y - 5
2(2y - 5) = 3y
x = 2y - 5
4y - 10 = 3y
x = 2y - 5
y = 10
x = 20 - 5
y = 10
x = 15
Odp.: Borsuk waży 15kg.