МОЖИТЕ ПОМОЧЬ!!!!ПОЖАЛУЙСТА СРОЧНО......ДАЮУ 20 БАЛОВ

1. 1)
$2 \frac{4}{9} + x = 3 \frac{7}{9} \\ x = 3 \frac{7}{9} - 2 \frac{4}{9 } \\ x = 1 \frac{3}{9}$
1. 2)
$3 \frac{5}{7} - x = 1 \frac{1}{7} \\ x = 1 \frac{1}{7} + 3 \frac{5}{7} \\ x = 4 \frac{6}{7}$
2. 1)
$2 \frac{3}{11} + 1 \frac{5}{11} - 2 \frac{5}{11} = \frac{24}{11} + \frac{16}{11} - \frac{26}{11} = \frac{14}{11} = 1 \frac{3}{11}$
2. 2)
$5 \frac{5}{8} - 3 \frac{3}{8} + 2 \frac{7}{8} = 5 \frac{1}{8}$

2. 3)
$4 \frac{8}{15} - 1 \frac{6}{15} - 2 \frac{1}{15 } = 1 \frac{1}{15}$
3. 1)
$12 \frac{1}{3} - (3 \frac{1}{9} + 4 \frac{2}{9} ) = 12 \frac{1}{3} - 7 \frac{1}{3} = 5$
3. 2)
$5 \frac{1}{8} + 9 \frac{3}{8} - 7 \frac{5}{8} = 6 \frac{7}{8}$
3. 3)
$6 \frac{4}{11} - 2 \frac{6}{11} + (4 \frac{5}{11} - \frac{1}{11} ) = 3 \frac{9}{11} + 4 \frac{4}{11} = 8 \frac{2}{11}$