x-60%x+28=50%x-9 解方程

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x-60%x+28=50%x-9 解方程
x-60%x+28=50%x-9 解方程

x-60%x+28=50%x-9 解方程
x-60%x+28=50%x-9
x-0.6x+28=0.5x-9
0.4x+28=0.5x-9
0.5x-0.4x=28+9
0.1x=37
x=370

37=0.1x
x=370

X-60%X+28=50%X-9
40%X+28=50%X-9
28+9=(50%-40%)X
X=370

x-60%x+28=50%x-9
100x-60x+2800=50x-900
-10x=-3700
x=370

370

x=37

x-60%x-50%=-9-28
-10%x=-37
x=370

100x-60+2800=50x-900
50x=-3640
x=-728