2x-0.5/0.5-2x-1.4/0.2＞0.5-x/0.25 各位大神快帮我解一下这个不等式,急!

250x - 2(x+50)(x+0.5)求x x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4（x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1 (x-2)+(x+2）+0.5x+2x等于多少个x?(x-2)+(x+2）+0.5x+2x等于多少x?要清楚! {3(1-x)>2(x+9), x-3/0.5- 3.5x+1.4/0.7≤-14 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 解方程:(x+10)+(x-15)=280-x x+15=3*(109-x) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(...解方程:(x+10)+(x-15)=280-xx+15=3*(109-x) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7)13x-4(2x+5)=17(x-2)-4(2x-1) (x+2)(x-1)+(x+3)(x+1)=x·x-1 求x (5x-4)(2x+5)(3x-6)(2x-4)=(2x-4)(2x+5)·0.5 求x 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X 6X-（360X-0.5X）=2×（360X-0.5X） 6X-（360X-0.5X）=2×（360X-0.5X）怎么算? 12x-2/21x=快点9点之前还有7x-x+2/3x-3(4x-0.5)-2x+(3x-1)-(x+5) (X-4)(x-2)-2(X-1)(X+3)其中X=-0.5 2(3-x)=9 求x 4(x+0.5)+x=17求x 0.5x(x+2)=1-x(3-.05x) X=? (1)3.5x+x-14=18.4 (2)2.7*2-1.5x=0 (3)13x-6.8x+x=46.8 (4)17.5-0.5x=12.7 (5)5x-1.4x=54 3.14*（0.5x)(0.5x)*2x=50 4.75x-0.5x^2-0.5=0,解X 4-x=2(-0.5x²+2.5x-2)