15000x+3000x+800(350-2.5)=50
15000x+3000x+800(350-2.5)=50
6000/(x+50)+3000/x=9000/(x+30)
50X+40X×(2.5X)=120 怎么解?
x加30%x=52、x减40%x=15、50%x加x=31.5、x减1%x=19.8、x加25%x=2.5、x减15%x
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
10.5(x-4)=2.5x
X×1500+2/3X×2000+(350-X-2/3X)×800=520000的过程!
x+17=3(x+13),2x-11.2=0.6x,2.5x-2.17=21.9-5.8x,8(x-1.5)=x+0.6
解方程【100-(X-3000)/50】*(X-150)-(X-3000)=307050
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2
(X+X)+(X-X)+(X*X)+(X/X)=100
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)