-40+20=-(40-20)=-20
500-600=-(600-500)=-100
-7,3+7,9=7,9-7,3=0,6
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Answers & Comments
2) -100
3) 0.6
Вот ответы
-40+20=-(40-20)=-20
500-600=-(600-500)=-100
-7,3+7,9=7,9-7,3=0,6