Ответ:
–7 + 4 = 4 + (-7)
24+ (–19) = –19 + 24
7 + (-12) = –12 + 7
–3 + (–18) = –18 + (-3)
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Ответ:
–7 + 4 = 4 + (-7)
24+ (–19) = –19 + 24
7 + (-12) = –12 + 7
–3 + (–18) = –18 + (-3)