0.5x+3(0.3-0.2x)≥0.4x
1-0.5x/0.3-2/3x=0.3x/0.2x+1
0.04分之0.1X-0.3-X=0.4乘以(0.5X-3)求X
1、0.3X-0.4X=0.5 2、5X-2.5X+3.5X=-18 3、X-2/5X=-3+6
解不等式 0.2x>0.3x+1 0.5x-1
x-2/0.2-x+1/0.5=3 x=?
160乘25%-1.3x=17.9 x/5-x/6=0.4 3(x+2)=40+11 0.3/0.5=x+1/2x-1
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
0.2分之x+0.4-0.5分之x-3=2?
(1)3x(x+0.2)=4x(x-1.1)
3(x-7)-5(4-x)=15 0.2分之0.1x+0.3+2.5=0.4x-1
解方程 4x+0.5=7.5 0.25x+3=0.3x 0.4(x-16 )=15.2
解方程0.3x+0.8/0.5-0.02x+0.3/0.3-1=0.8x-0.4/3