若5X-8Y=0,则X+3Y/X-3Y=

分类: 作业答案 • 2022-03-16 23:49:52

问题描述：

答

5X-8Y=0
5x=8y
x=8/5y
X+3Y/X-3Y
=(8/5y+3y)/(8/5y-3y)
=23/5÷(-7/5)
=-23/7