解方程.24+20%x=40 2x+60%x=78 1.7x-120%x=65 x-35%=39
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解方程.24+20%x=40 2x+60%x=78 1.7x-120%x=65 x-35%=39
![解方程.24+20%x=40 2x+60%x=78 1.7x-120%x=65 x-35%=39](/uploads/image/z/6133907-11-7.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B.24%2B20%25x%3D40+2x%2B60%25x%3D78+1.7x-120%25x%3D65+x-35%25%3D39)
24+20%x=40
0.2x=16
x=80
2x+60%x=78
2.6x=78
x=30
1.7x-120%x=65
0.5x=65
x=130
x-35%=39
x=39+0.35
x=39.35
0.2x=16
x=80
2x+60%x=78
2.6x=78
x=30
1.7x-120%x=65
0.5x=65
x=130
x-35%=39
x=39+0.35
x=39.35
解方程.24+20%x=40 2x+60%x=78 1.7x-120%x=65 x-35%=39
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