Question

Помогите 982! Пожалуйста​

Answer 1

Пошаговое объяснение:

1) –2,8+х+5,36–7,2+у–7,36= –12+х+у

при х=–13; у=54

–12–13+54= 29

2) $m - 2 \frac{4}{9} + 8 \frac{13}{24} + n - 3 \frac{2}{9} - 4 \frac{5}{24} = m + n + 4 \frac{13 - 5}{24} - 5 \frac{4 + 2}{9} = m + n + 4 \frac{8}{24} - 5 \frac{6}{9} = m + n + 4 \frac{1}{3} - 5 \frac{2}{3} = m + n - 1 \frac{1}{3}$

при m= $- 3 \frac{5}{6}$ ;

n= $- 2 \frac{11}{12}$

$- 3 \frac{5}{6} - 2 \frac{11}{12} - 1 \frac{1}{3} = - 3 \frac{10}{12} - 2 \frac{11}{12} - 1 \frac{4}{12} = - 6 \frac{25}{12} = - 8 \frac{1}{12}$