144÷x+6=12 125÷x-5=5x÷13-6=5.56x÷5=180÷42.8+2x=8.420-5x=4.58
144÷x+6=12 125÷x-5=5x÷13-6=5.56x÷5=180÷42.8+2x=8.420-5x=4.58
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
2x+3x+4x+5x+x+6x+7x=100
x÷2+x÷5+x÷6=1066 求x等于多少
已知x²+3x-1=0 求(x-3)÷(3x²-6x)÷(x+2-[5÷(x-2)])的值
1.若x^2+3x-1=0,则x-3/3x^2-6x÷(x+2 - 5/x-2)=________.
先化简,再求值:x^2-5x+6/3x^2-3x÷(1-3/x+1)(1+2/x-3),其中x=2.
若x²+3x-1/3=0 则代数式x-3/3x²-6x÷(x+2-5/x-2)的值
已知x²+3x-1=0,求(x-3)/(3x²-6x)÷(x+2-5/(x+2))的值
6÷(x-1)+3÷x=(x+5)÷(x∧2-x)