9x+53-4x=68.5用方程怎么算

问题描述:

9x+53-4x=68.5用方程怎么算

9X+54-4X=68.5
简化:9X-4X+54=68.5
5X=68.5-54
X=(68.5-54)/5
X=2.9

5x=15.5
x=3.1

9x+53-4x=68.5
5x=68.5-53
5x=15.5
x=3.1

9x+53-4x=68.5
9x-4x=68.5-53
5x = 15.5
x = 3.1