Помогите с таблицей!!!!!!!!!!!!!!!!!!!!!!!!!!

Question

Помогите с таблицей!!!!!!!!!!!!!!!!!!!!!!!!!!

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Answer 1

1)0
2)0
3)78
4)-75,7
5)4,2

Answer 2

A + b= 0.35 - 0.35 = 0
a + b= -3 1/7 + 3 1/7 = 0
a + b= 96 - 18 = 78
a + b = -81.7 + 6 = - 75.7
a + b = -46.8 + 51 = 4.2