3 X-1/5 X=7/2

来源：学生作业帮助网编辑：作业帮时间：2024/05/05 11:14:32

3 X-1/5 X=7/2
3 X-1/5 X=7/2

3 X-1/5 X=7/2
(3-1/5)X=7/2
14/5X=7/2
X=7/2÷14/5
X=5/4

15x/5-x/5=7/2
14x/5=7/2
x=5/4

14/5x=7/2
x=5/4

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