方程5x+4x=3x+18怎么解?_数学解答

方程5x+4x=3x+18怎么解?

人气：350 ℃　时间：2019-12-09 09:35:59

解答

5x + 4x = 3x + 18
5x + 4x - 3x = 18
(5 + 4 - 3)x = 18
6x = 18
x = 18÷6
x = 3