Question

972 помогите пожалуйста срочно

Answer 1

#972

$1)\frac{2}{3} + 1\frac{5}{9} + (-\frac{8}{9}) = \frac{6}{9} + \frac{14}{9} -\frac{8}{9} = \frac{12}{9} = \frac{4}{3} = 1,(3)\\2) 2\frac{7}{9} - 1\frac{2}{3} + \frac{5}{9} = \frac{23}{9} - \frac{15}{9} + \frac{5}{9} = \frac{13}{9} = 1,(4)\\3) 3\frac{2}{3} + (- 1\frac{1}{9}) + \frac{7}{9} = \frac{33}{9} - \frac{10}{9} + \frac{7}{9} = \frac{30}{9} =\frac{10}{3} = 3,(3)$