Ответ:
\(3\frac{11}{20}=3+0,55=3,55\).
\(4,62+3,55=8,17\).
\(\frac{7}{8}=0,875\).
\(0,875-0,586=0,289\).
\(8\frac{7}{40}=8+0,175=8,175\).
\(8,175-5,49=2,685\).
Ответ: 1) 8,17; 2) 0,289; 3) 2,685.
\(3\frac{11}{20}=3+0,55=3,55\).
\(4,62+3,55=8,17\).
\(\frac{7}{8}=0,875\).
\(0,875-0,586=0,289\).
\(8\frac{7}{40}=8+0,175=8,175\).
\(8,175-5,49=2,685\).
Ответ: 1) 8,17; 2) 0,289; 3) 2,685.