3÷()=5x()=5:()=1.25=() - - 4 16
3/x-1=4/x 6/x+1=x+5/x(x+1)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(先化简后求值)(3x/x+2-x/x-2)+2x/x^2-4,x=4-根号5,
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
5x-3(2x+1)=6x-4(5-3x)求x
5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
x(x^2-1)+2x^2 *(x+1)-3x*(2x-5)=x(3x^2-4x)-28
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
8x-16=32 x-8分之5x=32 7x-(6+3x)=30 4x+(5-3x)=19
x-x/5=2.4 (求未知数x) 12÷5%x=8 4x+x=12.5
x(x-14)二0*x平方十|2x十27=0,x平方=x+56,x(5x+4)=5x+4,4x平方-45=3|x,-3x