Помогите пожалуйста срочно надо! решите - 4,6 +8 =
5,3 + (- 9,3) =
- 0,8+13 =
2,1 + (- 2,1) =
- 6,9 + 69,9 =
-22/5-32/15 =
-2/5+3/8 =
- 5/6-2/3 =
- 2/7+3/4 =
1/2-6/7 =
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