Question

Реши уравнение 2 1/7:b=2 19/28:3 3/4

Answer 1

$2 frac{1}{7} : b = 2 frac{19}{28} : 3 frac{3}{4} \ \ 2 frac{19}{28} b = 2 frac{1}{7} : 3 frac{3}{4} \ \ frac{75b}{28} = frac{15}{7} : frac{15}{4} \ \ frac{75b}{28} = frac{15}{7} * frac{4}{15} \ \ frac{75b}{28} = frac{4}{7} \ \ frac{75b}{28} = frac{16}{28} \ \ 75b = 16 \ \ b = frac{16}{75}$