Question

Помогите пожалуйста ​

Answer 1

$1)$

$(9 \frac{1}{9} \times \frac{3}{41} + 11 \frac{2}{3} \times 1 \frac{2}{7} ) \times x = 1 \\ ( \frac{82}{9} \times \frac{3}{41} + \frac{35}{3} \times \frac{9}{7} ) \times x = 1 \\ ( \frac{2}{3} + 15) \times x = 1 \\ \frac{2 + 45}{3} x = 1 \\ \frac{47}{3} x = 1 \\ 47x = 3 \\ x = \frac{3}{47}$

$2)$

$(7 \frac{1}{5} \times3 \frac{8}{9} - 9 \frac{1}{7} \times 2 \frac{5}{8} ) \times x = 1 \\ (\frac{36}{5} \times \frac{35}{9} - \frac{64}{7} \times \frac{21}{8} ) \times x = 1 \\ (28 - 24) \times x = 1 \\ 4x = 1 \\ x = 0.25$

$( \frac{7}{8} + \frac{17}{24} - 1 \frac{1}{12} ) \times x = 1 \\ ( \frac{7}{8} + \frac{17}{24} - \frac{13}{12} ) \times x = 1 \\ \frac{21 + 17 - 26}{24} \times x = 1 \\ \frac{12}{24} x = 1 \\ 12x = 24 \\ x = 2$

$4)$

$(1 \frac{14}{15} + \frac{8}{9} - 2 \frac{4}{45} ) \times x = 1 \\ ( \frac{29}{15} + \frac{8}{9} - \frac{94}{45} ) \times x = 1 \\ \frac{87 + 40 - 94}{45} \times x = 1 \\ \frac{33}{45} x = 1 \\ 33x = 45 \\ x = 1 \frac{4}{11}$