Ответ:
а+б (-26+4=-22) ; (30-9=21)
б-а (4-(-26)=4+26=30) ; (-9-30=-39)
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Ответ:
а+б (-26+4=-22) ; (30-9=21)
б-а (4-(-26)=4+26=30) ; (-9-30=-39)