Question

помогите пожалуйста​

Answer 1

Ответ:

$1) \: - 34 + 67 + ( - 19) + ( - 44) + 34 = - 34 + 67 - 19 - 44 + 34 = 4 \\ 2) \: 6 + ( - 7) - ( - 15) - ( - 6) - 30 = 6 - 7 + 15 + 6 - 30 = - 22 \\ 3) \: 3 \frac{1}{6} + ( - 2\frac{5}{9} ) - ( - 1 \frac{7}{12} ) = \frac{19}{6} - \frac{23}{9} + \frac{19}{12} = \frac{114 - 92 + 57}{36} = \frac{79}{36}$