40%x+(40%x-10)=x-30怎么解
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40%x+(40%x-10)=x-30怎么解
40%x+(40%x-10)=x-30怎么解
40%x+(40%x-10)=x-30怎么解
0.4X+0.4X-10=X-30 0.2X=20 X=100
10x+x*x=40
X/(x-30)=(x+40)/X解方程,
40%x+(40%x-10)=x-30怎么解
x-40%x=
60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2
未知数.x-5=10 x-60%x=18 40%x+30=80
x^2-10x-1200=0如何变为(x-40)(x-30)
(x-30)[600-10(x-40)] 结果X=50 (x-30)[600-10(x-40)]=10000
(16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x
x-40%x-40%x=15
x+40=2x x=?
X×X+(40-X)=58
X乘以X等于40 ---------------------X=?
(x+40%x)×85%-x=95
(x+40%x)×85%-x=95
4x+x=40x
40%x+70%x-x=1.8
80%x+30-x=10%x