Question

вычислите!!!
помогите плиииз дам 30 баллов

Answer 1

$1 frac{1}{7} = frac{1*7+1}{7} = frac{8}{7}$
$frac{8}{7} - frac{5}{7} = frac{8-5}{7} = frac{3}{7}$

$2 frac{3}{11} = frac{2*11+3}{11} = frac{25}{11}$
$frac{25}{11} - frac{7}{11} = frac{25-7}{11} = frac{18}{11} =1 frac{7}{11}$

$3 frac{9}{17} = frac{3*17+9}{17} = frac{51+9}{17} = frac{60}{17}$
$frac{60}{17} - frac{11}{17} = frac{60-11}{17} = frac{49}{17} =2 frac{15}{17}$

$4 frac{7}{27} = frac{4*27+7}{27} = frac{115}{27}$
$1 frac{16}{27} = frac{1*27+16}{27} = frac{43}{27}$
$frac{115}{27}- frac{43}{27} = frac{115-43}{27} = frac{72}{27} =2 frac{18}{27}$