2/9÷5+2/9×1/5+2/9×1/5简算

问题描述:

2/9÷5+2/9×1/5+2/9×1/5简算

2/9÷5+2/9×1/5+2/9×1/5
=2/9x1/5+2/9×1/5+2/9×1/5
=3x2/9x1/5
=2/15