0.5(5X-12)=5(3.7-0.3X) 1.9(X-2)=0.5(X+0.5) (0.5X+
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
1、0.3X-0.4X=0.5 2、5X-2.5X+3.5X=-18 3、X-2/5X=-3+6
2(0.9-x)+4=4.3.(x+1.8)/8=6.6.12x+12=16x.12x-35=5x.X/0.5-10+2
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
4X+0.5X=13.5X
0.5x+(5x+20)*0.5=298 x
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
(3x-1)/0.5=(4-x)/0.3+(3x+5)/1.5 x得多少?
11x+0.5=15x-0.7 5x+12=8x+3
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
4X减0.5X等于1.75 X除0.63=12 5X加X=20 5X减3X=3.2