Question

помогите УМАЛЯЮ ДАМ 20 БАЛОВ​

Answer 1

Ответ:

1) Г

2) Б

3) А

$1)x + \frac{7}{9} = \frac{8}{9} \\ x = \frac{8}{9} - \frac{7}{9} \\ x = \frac{1}{9} \\ \\ 2) \frac{5}{9} - x = \frac{1}{9} \\ - x = \frac{1}{9} - \frac{5}{9} \\ x = \frac{4}{9}$

$3)(x + \frac{4}{9} ) - \frac{2}{9} = 1 \\ x = 1 - \frac{2}{9} \\ x = \frac{7}{9}$