从13.5里减去x的6倍,差是15,求x.
问题描述:
从13.5里减去x的6倍,差是15,求x.
答
13.5 - 6x = 15
6x = 13.5 - 15
6x = -1.5
x = -1.5/6
x = -0.25确定?