Question

18/25:9/10+4/15(Помогите срочно)

Answer 1

$\tt\displaystyle\frac{18}{25}:\frac{9}{10}+\frac{4}{15}=\frac{18}{25}*\frac{10}{9}+\frac{4}{15}=\frac{18*10}{25*9}+\frac{4}{15}=\frac{2*\not9*2*\not5}{5*\not5*\not9}+\frac{4}{15}=\\\\=\frac{4}{5}+\frac{4}{15}=\frac{4*3}{5*3}+\frac{4}{15}=\frac{12}{15}+\frac{4}{15}=\frac{16}{15}=1\frac{1}{15}$