12x=16(70/2-x)
x-o.8x=6 12x-8x=4.8 3x-8=16 7.5x-2x x-0.7x=3.6 求答案
5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)
(x-2)/(x+2)-16/(x^2-4)=(x+2)/(x-2)
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-1
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
解方程:2x(x-2)-6x(x-1)=4x(1-x)+16.
4+6X(3x-2)=16x 怎么解方程?注备:X=乘 x=x
解方程⑴ x/(2x^2-11x-21)=(x+7)/(x^2-12x+35)
解方程:(x^2+3x+1)/(4x^2+16x-1)-(12x^2+18x-3)/(x^2+3x+1)=2
已知x-4/x=6,求代数式2x²-20x/x²-14x+4除(1-x-12/2-x)的值