380-(156/13+180)的简便算法
问题描述:
380-(156/13+180)的简便算法
答
380-(156/13+180)
=380-156/13-180
=200-156/13
=200-12
=188
答
380-(156/13+180)
=380-(12+180)
=380-180-12
=200-12
=188