Ответ:\(16\cdot\frac18=\frac{16}{8}=2\).\(15\cdot\frac7{25}=\frac{15\cdot7}{25}=\frac{21}{5}=4\frac15\).\(21\cdot\frac5{14}=\frac{21}{14}\cdot5=\frac32\cdot5=7\frac12\).\(26\cdot\frac7{13}=2\cdot7=14\).