8x-0.5x=30
x+0.5x=30
30%x+0.5x=1/4x+8/5x=多少
30X-2X=84 5.8X-X=60 6.6X-5X=8 4X-X=24 1.5X-X=1
5x-4x=2*1.8,5x-2+3x=3.6,x+4x=20.3,8x+10-3x=30,10.5-0.5x+0.5=
5x+2=-8 x=30 3x=5x-14 x
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
8x-0.5x=0.5x-21怎么算
5/8X-30+3/10X+84=X
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
0.1X+0.5(30-X)=9.8
几道未知数的题!5X*3=7X+96 4X*3+6=8X+30 X-15+X+5+0.5X+3X=265
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2