80%x+(500-X)60%=500*75% 急
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80%x+(500-X)60%=500*75%急80%x+(500-X)60%=500*75%急80%x+(500-X)60%=500*75%急80%x+(500-X)60%=500*75%08X+0
80%x+(500-X)60%=500*75% 急
80%x+(500-X)60%=500*75% 急
80%x+(500-X)60%=500*75% 急
80%x+(500-X)60%=500*75%
08X+0.6(500-X)=500*.075
08X+0.6*500-0.6X=375
0.2X+300=375
0.2X=75
X=75/0.2
X=375
x=375
80%x+300-60%x=375
20%x=75
x=375
很简单……
80%x+(500-X)60%=500*75%
80%x+300-60%x=375
20%x=75
x=375
0.8x+500*0.6-0.6x=375
0.2x=375-300
0.2x=75
x=75/0.2
x=375
x-1/4x=500-x+60 怎么算
60%X + 80%X - 12 = X
解方程x(60-x)=500
80%x+(500-X)60%=500*75% 急
500-x/x=0.06
x+60%x=80
x-60%X=80
600x十500x(100-x)=56000 x=60
3x*x=1600+x*x-80x
500*60%+(x-1000)80%=1100
500*60%+(x-1000)80%=1100
80%乘以X+(500-X)乘以60%=500X74%怎么做500X74%那个X是乘号
几道数学计算第一题:4*35%十3%(21-x)=(15-2x)*20%第二题:80%x十(500-x)*3/5=500*74%第三题:20%x十60%(25-x)=50%*50
(10+X)(500-20X)=6000 ----------------------X=?
200+x=2/3*(500+x) x=
0.5(500-x)-0.5x=237.5x怎样解?
x-15%x=42 500怎么解x
X^2+50x=500,x是多少,