20-5x=4.5方程求解,速度!
问题描述:
20-5x=4.5方程求解,速度!
答
20 - 5x = 4.5
5x = 15.5
x = 3.1
20-5x=4.5方程求解,速度!
20 - 5x = 4.5
5x = 15.5
x = 3.1