Ответ:\(5\cdot\frac45=4\).\(3\cdot\frac13=1\).\(\frac89\cdot9=8\).\(\frac{12}{17}\cdot17=12\).\(\frac12\cdot\frac13=\frac16\).\(\frac23\cdot\frac25=\frac4{15}\).\(\frac35\cdot\frac56=\frac12\).\(\frac{12}{25}\cdot\frac56=\frac{2}{5}\).