x÷0.9-(0.19-0.4x)÷0.07=1 一小时内给出答案第二天检验对错给分

x-1/x÷(x-1/x) (x+x)+(x-x)+(x*x)+(x÷x)=81 (x-25)×0.4+25=x÷2求x x÷0.9x=4, x÷5+6=0.4x 先化简,再求值(x²+x+1分之x²-4)÷(x³+x²+x分之x³-2x²)²乘以（x+2）³分之x,其中x²+2x-2=0. x>o,请将下列算式,按从小到大的顺序排列:x÷1.2,0.4x,x÷0.25,x+x+x,7.5x x＞0,请将下列算式按从小到大的排序排列；x÷1.2,0.4x,x÷0.25,x＋x＋x,7.5x. 21分之10x÷3分之2=7分之3x-3分之1x-2分之1x=190x-53x=7408.5x-6.9x=43.3x-200=0.2x+1101.02+0.4x+2.6x=3.428.9x-67=4.5x+656x-58=3x+1410x-20=5x+806x+5=10x-3420-1.4x=9.8x-288.2x+5.4x=272 [x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简[x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简 化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x 【{x²-4x+4/x²-4}-x/x+2】÷x-1/x+2 [(x-4)/(x-4x+4)-(x-2)/(x+2)]÷x/(x-2) 化简(x^2-2x+1)/(x^2+1)÷(x-1)/(x^2+x)-x (14.5-X)÷0. -x²×(-x)²÷x³ (x^2-x-6)÷(x-3) X÷48%=X+(X+32)