Question

Решите пж ,дам 35 баллов

Answer 1

$\bf NUMBER \: 1.$

$a)12 \frac{2}{13} - (8 \frac{2}{13} + 1 \frac{5}{13} ) = 12 \frac{2}{13} - (8 + 1) + ( \frac{2}{13} + \frac{5}{13} ) = 12 \frac{2}{13} - (9 + \frac{7}{13} ) = 12 \frac{2}{13} - 9 \frac{7}{13} = \frac{158}{13} - \frac{124}{13} = \frac{34}{13} = 2 \frac{8}{13}$

$b)(7 \frac{5}{14} + 2 \frac{9}{14} ) - 3 \frac{5}{8} = (7 + 2) + ( \frac{5}{14} + \frac{9}{14} ) - 3 \frac{5}{8} = 9 + \frac{14}{14} - 3 \frac{5}{8} = 10 - 3 \frac{5}{8} = 9 \frac{8}{8} - 3 \frac{5}{8} = \frac{80}{8} - \frac{29}{8} = \frac{51}{8} = 6 \frac{3}{8}$

$\bf NUMBER \: 2.$

$(3 \frac{9}{13} + x) - 4 \frac{9}{13} = 1 \frac{7}{13}$

$3 \frac{9}{13} + x - 4 \frac{9}{13} = 1 \frac{7}{13}$

$\frac{48}{13} + x - \frac{61}{13} = 1 \frac{7}{13}$

$- \frac{13}{13} + x = 1 \frac{7}{13}$

$x = 1 \frac{7}{13} + \frac{13}{13}$

$x = \frac{20}{13} + \frac{13}{13}$

$x = \frac{33}{13} = 2 \frac{7}{13}$

$\bf NUMBER \: 3.$

Вместо "*" можно подставить числа от 1 до 6.

$\frac{378}{319} \: \frac{378}{329} \: \frac{378}{339} \: \frac{378}{349} \: \frac{378}{359} \: \frac{378}{369}$