Odpowiedź:
a + b = 5
a - b = - 1 c = 5
------------ dodajemy stronami
2 a = 4 / : 2
a = 2
-------
b = 5 - a = 5 - 2 = 3
Odp. a = 2 b = 3 c = 5
==========================
Szczegółowe wyjaśnienie:
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Odpowiedź:
a + b = 5
a - b = - 1 c = 5
------------ dodajemy stronami
2 a = 4 / : 2
a = 2
-------
b = 5 - a = 5 - 2 = 3
Odp. a = 2 b = 3 c = 5
==========================
Szczegółowe wyjaśnienie: