Автор - alexandra6325

 - 83 + ( - 28)
 - 793 + ( - 287)
 - 10973 + ( - 4908)
 - 1.31 +  - (9.9)
 - 8.82 + (9.78)
 - 199 + ( -8.92)
Зделайте даю 10 баллов​

Ответ

Автор - elyalevitan

- 83 + ( - 28)= (-83)-28= -111

- 793 + ( - 287)= (-793)-287= -1080

- 10973 + ( - 4908)= (-10973)-4908= -15881

- 1.31 + - (9.9)=(-1.31)-9.9= -11.21

- 8.82 + (9.78)= 9.78-8.82= 0.96

- 199 + ( -8.92)=(-199)-8.92= -207.92

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