x+15%x=3.22 ,1/2x-25%x=10 ,x*(1-37.7%)=5/8 ,40%x=16 ,19-120%
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x+15%x=3.22 ,1/2x-25%x=10 ,x*(1-37.7%)=5/8 ,40%x=16 ,19-120%x=7 ,50%x=22解方程
x+15%x=3.22 ,
0.15x= 3.22
x= 322/15
1/2x-25%x=10 ,
0.5x- 0.25x =10
0.25x =10
x= 40
x*(1-37.7%)=5/8
0.623x= 0.625
x=1
,40%x=16 ,
0.4x = 16
x= 40
19-120%x=7 ,
19- 1.2x = 7
1.2x = 12
x= 10
50%x=22
x= 22×2
x= 44
0.15x= 3.22
x= 322/15
1/2x-25%x=10 ,
0.5x- 0.25x =10
0.25x =10
x= 40
x*(1-37.7%)=5/8
0.623x= 0.625
x=1
,40%x=16 ,
0.4x = 16
x= 40
19-120%x=7 ,
19- 1.2x = 7
1.2x = 12
x= 10
50%x=22
x= 22×2
x= 44
x+15%x=3.22 ,1/2x-25%x=10 ,x*(1-37.7%)=5/8 ,40%x=16 ,19-120%
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