(x-30):(3/7x+30)=3:
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(x-30):(3/7x+30)=3:(x-30):(3/7x+30)=3:(x-30):(3/7x+30)=3:教学通jxt123com(x-30):(3/7x+30)=3:2得2(x-30)=3(
(x-30):(3/7x+30)=3:
(x-30):(3/7x+30)=3:
(x-30):(3/7x+30)=3:
教学通jxt123com
(x-30):(3/7x+30)=3:2 得2(x-30)=3(3/7x+30) 2x-60=9/7x+90 x=270
x-2/3x+x+2/7x=30
计算:(x+1)x=7 (x-1)(x+2)=30 (3-x)(3-x)+x=9
3X+30+X+X-15=?
x+35=(x+3x)*30%
(16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
x-(30-x)=(30-x)-x/3,怎么解
x+3x-(9x+30x)=98
(16x-13)/(4x-3)+(40x-43)/(8x-9)=(32x-30)/(8x-7)+(20x-24)/(4x-5)....
(16x-13)/(4x-3)+(40x-43)/(8x-9)=(32x-30)/(8x-7)+(20x-24)/(4x-5)
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
x-2/5x-(x-2/5x)2/3-(2/5x-1/3x)=30求x
(x^2-3x+1) (x^2+3x+2)( x^2-9x+20)= -30求X
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
方程题3(x-1)-7(x+5)=30(x+1) x=?
3/4x-20+15/50-2x*x+7/6x+30=0
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
解方程:(x-3)÷2=7.5 3x+x=30 15x+x=40 2.5x-6=18.5 3x+7=59.2