0.72÷{(9.79+7.49)÷4.8}的简便算法
问题描述:
0.72÷{(9.79+7.49)÷4.8}的简便算法
答
0.72÷{(9.79+7.49)÷4.8}
=72×4.8÷1728
=72×4.8÷(72*24)
=4.8÷24
=0.2