1/9-5/12×4/5÷3怎么用递等式算?

问题描述:

1/9-5/12×4/5÷3怎么用递等式算?

1/9-5/12×4/5÷3
=1/9-1/3÷3
=1/9-1/3×1/3
=1/9-1/9
=0