Mathematics, 08.02.2021 23:20, jheriann

1) -7+ 12; 3) –19 + 15; 2) 13 + (-18); 4) 40 + (-20);
5) —1,7 + 3;
6) 2,8 + (-5,5);
7) 5+ (-6,9);
8) 2,7 + (-2,7).

Answers: 3

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Do you know the correct answer?

1) -7+ 12; 3) –19 + 15; 2) 13 + (-18); 4) 40 + (-20);
5) —1,7 + 3;
6) 2,8 + (-5,5);