Odpowiedź:
Szczegółowe wyjaśnienie:
a) 3/7 + (-2/7) = 3/7 - 2/7 = 1/7
b) -11/17 + 5/17 = -6/17
c) 2/9 + (-3/9) = 2/9 - 3/9 = -1/9
a) 1/7
b) - 6/17
c) - 5/9
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Odpowiedź:
Szczegółowe wyjaśnienie:
a) 3/7 + (-2/7) = 3/7 - 2/7 = 1/7
b) -11/17 + 5/17 = -6/17
c) 2/9 + (-3/9) = 2/9 - 3/9 = -1/9
Odpowiedź:
a) 1/7
b) - 6/17
c) - 5/9
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