9又6分之5乘以4.25加上4又4分之1除以6

问题描述:

9又6分之5乘以4.25加上4又4分之1除以6

=59/6×17/4+17/4×1/6
=17/4×(59/6+1/6)
=17/4×60/6
=4.25×10
=42.5