Question

19．$\frac{5}{6}$×7×$\frac{6}{5}$=$\frac{5}{6}$×$\frac{6}{5}$×7=7．

Answer 1

分析 根据乘法交换律进行计算即可．

解答 解：$\frac{5}{6}$×7×$\frac{6}{5}$
=$\frac{5}{6}$×$\frac{6}{5}$×7
=1×7
=7
故答案为：$\frac{5}{6}$，$\frac{6}{5}$，7．

点评 考查了运算定律与简便运算，选择合适的运算定律进行计算即可．