(1\2x+40)÷(x÷10)=(1\2x+40)÷(x÷15)怎么解?
x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
x/40+x/60+[20-(x/40+x/60)*8]÷40=x/40+(20-x)/8怎么解
解方程:1+0.4x=0.2(x+10) 2.x÷2=x+200
x-2/x-1÷(x+1-3/x-1)
1. x+0.5x=6 4x+16=40 x/5=32% x-4/9x=10/21 x-1/8x=5/8 7x÷2=2.
x²-1/x²-2x+1÷x+1/x-1 X 1-x/1+x
计算:2x/(x-2)(x+1)÷(1-x/x+1)-x²+2x/x²-4?
[(x+2)/(x²+2x)-(x-1)/(x²-4x+4)]÷(x-4)/x
(x²-2x分之x+2-x²-4x+4分之x-1)÷x分之4-x 化简怎么计算额求求大家了~
1.(1+2/X-X+1/X-2)÷X+4/X²-2X
先化简代数式再求值(3/x+1 - x+1)÷x²-2x/x+1,其中x满足方程x/x-1+1/x=1