Question

九又5/8-9分之八再减去二又八分之五用简便方法怎么计算

九又5/8-9分之八再减去二又八分之五用简便方法怎么计算

Answer 1

9又5/8-8/9-2又5/8
=9又5/8-2又5/8-8/9
=7又5/8-8/9
=7+5/8-8/9
=6+72/72+45/72-64/72
=72/72-64/72+45/72+6
=8/72+45/72+6
=53/72+6
=6又53/72