od liczby -15 odjęto liczbe -8.otrzymano liczbę:a) -23, b)23, c) 7, d)-7
-15-(-8)=-15+8 (bo miuns i minus daja nam plus) =(-7)
-15 - (-8) = dwa minusy daja plus
czyli -15 + 8 = -7
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-15-(-8)=-15+8 (bo miuns i minus daja nam plus) =(-7)
-15 - (-8) = dwa minusy daja plus
czyli -15 + 8 = -7