260-10x÷2+260＋10x÷2=260求X等于多少

260-10x÷2+260＋10x÷2=260求X等于多少 10x(x+2)÷5=(x+8) 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 已知f(x)=10x^2+8x^5-12x^3求：f(x)÷(-5x^2)和f(x)×（x^2-1)的值 当x=9/2时,求(x^2+7x+10)/(x^2+6x+5)×(x^3+1)/(x^2+4x+4)÷(x^2-x+1)/(x+2) （x平方+7x+10）/（x平方+6x+5） × （x三次方+1）/（x平方+4x+4） ÷ （x平方-x+1）/x-2 其中,x=4. (x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2 x-x÷5＝244 x-13＝96-x+13 12x＝10(x+20) 3.6x÷2=7.2×2x-x÷5＝244x-13＝96-x+1312x＝10(x+20)3.6x÷2=7.2×2x÷3-x÷4＝5这些题方程怎么解, 化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)化简 [3x/(x+2)-x/(x-2)]÷x/(x^2-4 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4) x^2+10x( )=(x+ )^2 x^2-10x=2-x 2x×x=10,求x (8x^4-6x^3-4x^2+10x)÷(-2x)等于 x^2-10x+25/x-1÷x^2-1/5-x 计算：x²-6x+9/x²-x-6÷x²-9/x²-3x-10 乘以x+3/2x-10 (3x³+10x²+13x-27)÷(x²+2x-3)