（6.9×0.125×1.75）除以（2.3×0.

（6.9×0.125×1.75）除以（2.3×0.125×0.25）的简算方法

1个回答

（6.9×0.125×1.75）除以（2.3×0.125×0.25）
=(3*2.3*0.125*0.25*5)除以（2.3×0.125×0.25）
=3*5
=15