解方程x+5⼀9=17⼀18 x+5⼀6=11⼀12 6⼀7-x=1⼀6 2⼀3+x=7⼀9 7⼀8-x3⼀4 0.48x+12=48

7⼀8-x=3⼀4
2025-02-03 00:03:04
推荐回答(1个)
回答1:

x+5/9=17/18
两边乘以18
2x+10=17
x=7/2
x+5/6=11/12
两边乘以12
2x+10=11
x=1/2
6/7-x=1/6
两边乘以42
36-42x=7
42x=29
x=29/42
2/3+x=7/9
两边乘以9
6+9x=7
x=1/9
[7/8-x3/4=?]
0.48x+12=48
两边除以0.12
4x+100=400
4x=300
x=75