Question

九分之五乘十二分之三十五加九分之一乘十二分之七乘五简便计算

Answer 1

九分之五乘十二分之三十五加九分之一乘十二分之七乘五
=5/9×35/12+5/9×7/12
=5/9×（35/12+7/12）
=5/9×7/2
=35/18
=1又17/18