Question

помогите решить пример

Answer 1

$(2\frac{1}{16}-1\frac{1}{14})*28=(2\frac{7}{112}-1\frac{8}{112})*28=(1\frac{119}{112}-1\frac{8}{112})*28=\frac{111}{112}*28=\frac{3108}{112}=\frac{111}{4}=27,75$