0.2x+0.5/0.5--0.03+0.12x/0.3=x-6/2
0.2x+0.5/0.5--0.03+0.12x/0.3=x-6/2
1-0.5x/0.3-2/3x=0.3x/0.2x+1
0.2x+0.5/0.5-0.03+0.02x/0.03=1 x-1/0.3-x+2/0.5=1
(X+4)/0.2-(X-3)/0.5=0.2 x-(x-1)/6=3-(x+2)/3 x/12-(2x-1)/20={
6X-(360X-0.5X)=2×(360X-0.5X)
1、0.3X-0.4X=0.5 2、5X-2.5X+3.5X=-18 3、X-2/5X=-3+6
x-2/0.2-x+1/0.5=3 x=?
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
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
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
先化简再求值先化简再求值:(x-x/x+1)(x+1/x^2+4x+4)(x^2-4/x^2-2x),其中x=-0.5
0.2x^2-0.3x+0.5-0.1x^2+0.7x-0.11怎么算?