Question

)в) (3/7+5/14)+1/14 г) 7/15++(2/15+1/5) д) 3/16+(1/16+5/8) e) (1+13+1/14)+12/13

Answer 1

$1) (\frac{6}{14} + \frac{5}{14} )+ \frac{1}{14} = \frac{11+1}{14} = \frac{12}{14} = \frac{6}{7} \\ \\ 2) \frac{7}{15} +( \frac{2}{15} + \frac{3}{15} )= \frac{7}{15} + \frac{5}{15} = \frac{9}{15} = \frac{3}{5} = \frac{6}{10} =0.6 \\ \\ 3) \frac{3}{16} +( \frac{1}{16} + \frac{10}{16} )= \frac{3}{16} + \frac{11}{16} = \frac{14}{16} = \frac{7}{8} = \frac{875}{1000} 0.875$