Question

помогите пожалуйста!!!!! прошу!!!!!!!!!!!!!!! ПЖ!!!!!!! СРОЧНО!!!!!!​

Answer 1

Ответ:

1)$5\frac{7}{18}$, 3)$3\frac{11}{84}$, 5)$1\frac{62}{75}$, 7)$5\frac{17}{24}$.

Пошаговое объяснение:

1)

$12\frac{5}{9} -7\frac{1}{6} = \frac{12*9+5}{9} - \frac{7*6+1}{6} =\frac{113}{9} -\frac{43}{6} = \frac{2*113}{2*9} -\frac{3*43}{3*6} =\frac{226}{18} -\frac{129}{18} =\frac{226-129}{18} =\frac{97}{18} =5\frac{7}{18}$

3)

$9\frac{5}{12} -6\frac{2}{7} =\frac{9*12+5}{12} - \frac{6*7+2}{7} =\frac{113}{12} -\frac{44}{7} =\frac{12*44}{12*7} =\frac{791}{84} -\frac{528}{84} =\frac{791-528}{84} =\frac{263}{84}= 3\frac{11}{84}$

5)

$5\frac{9}{25} -3\frac{8}{15} =\frac{5*25+9}{25} -\frac{3*15+8}{15} = \frac{134}{25} -\frac{53}{15} =\frac{3*134}{3*25} -\frac{5*53}{5*15} =\frac{402}{75} -\frac{265}{75} =\frac{402-265}{75}=\frac{137}{75} =1\frac{62}{75}$

7)

$10\frac{3}{8} -4\frac{2}{3} =\frac{10*8+3}{8} -\frac{4*3+2}{3} =\frac{83}{8} -\frac{14}{3} =\frac{3*83}{3*8} -\frac{8*14}{8*3} =\frac{249}{24} -\frac{112}{24} =\frac{249-112}{24} =\frac{137}{24} =5\frac{17}{24}$