1又9分之1÷【32又5分之2-(32.4-3分之1×25%)】×2

问题描述:

1又9分之1÷【32又5分之2-(32.4-3分之1×25%)】×2

1又9分之1÷【32又5分之2-(32.4-3分之1×25%)】×2
=20/9÷[32.4-32.4+1/12]
=20/9×12
=80/3