Question

Номер 785 помогите пожалуйста

Answer 1

1)

$7 \frac{7}{30} - (5 \frac{11}{30} - y) = 3 \frac{19}{30} \\ \\ 7 \frac{7}{30} - 5 \frac{11}{30} + y = 3 \frac{19}{30} \\ \\ y = 3 \frac{19}{30} - 7 \frac{7}{30} + 5 \frac{11}{30} \\ \\ y = 1 \frac{23}{30}$

2)

$(x - 1 \frac{9}{17} ) + 2 \frac{14}{17} = 5 \frac{5}{17} \\ \\ x - 1 \frac{9}{17} + 2 \frac{14}{17} = 5 \frac{5}{17} \\ \\ x = 5 \frac{5}{17} + 1 \frac{9}{17} - 2 \frac{14}{17} \\ \\ x =4$