解方程:1-2x分之3x=x-2分之6

(x^2-3x+1)/(x^2-4)=30/(x+2)(x^2-3x+1)/(x-2)=30x^2-3x+1=30x-60x^2-33x+61=0x=(33±√1333)/2

(x^2-3x+1)/(x^2-4)=30/(x+2)(x^2-3x+1)/(x-2)=30x^2-3x+1=30x-60x^2-33x+61=0x=(33±√1333)/2

X²-3X分之5X-7=X-1分之2+X-2分之3X²-3X分之5X-7=(X-1)(X-2)分之[2(X-2)+3(X-1)]X²-3X分之5X-7=(X²-

(x+2)分之(x+1)+(x+5)分之(x+4)=(x+3)分之(x+2)+(x+4)分之(x+3)x=-7/2再问：求过程正确答案是负2分之7我知道答案不知道过程再答：1/(2+x)+x/(2+x

x-1分之3-x(x-1)分之x+2=03x-(x+2)=02x=2x=1检验：x=1是增根∴方程无解

1:x²+X-2分之3=X-1分之X-X+2分之XX²+X-(X-1分之X)+X-2分之X=0X²+2X-(X-1分之X)-2分之X=0∵X-1≠0所以（X-1)(X&#

两边乘以x(x-1)得3x-(x+2)=03x-x-2=02x=2∴x=1检验：x=1是增根∴原方程无解

x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8方程两边分别通分,得[(x+2)(x+3)-(x+1)(x+4)]/[(x+1)(x+3)]=[(x+6)(x+7)-(x+8

x+2分之x+1+x+9分之x+8=x+3分之x+2+x+8分之x+7即x+2分之1+x+9分之1=x+3分之1+x+8分之1即x+2分之1-x+3分之1=+x+8分之1-x+9分之1（x＋2）（x＋

(x^2+x)分之7-(x^2-1)分之6=(x-x^2)分之37/(x^2+x)-6/(x^2-1)=3/(x-x^2)7/[x(x+1)]-6/[x(x-1)]=-3/[x(x-1)]分母最小公倍

原分式方程可变形为；5x+2/x(x+1)=3/x+1分式两边同乘公分母得：5x+2=3x解得：x=1检验：当x=1时,公分母x(x+1)不等于0所以x=1是原分式方程的解(/表示除号）再问：你算错啦

2x²/(x+1)-3(x+1)/x²=-5令a=x²/(x+1)2a-3/a=-52a²+5a-3=0(2a-1)(a+3)=0a=1/2,a=-3x

x+8/3x=121两边都×3得到：3X+8X=363合并左边11X=363两边都÷11X=33,

(x-3分之x)+(x^2-3x分之x+6)=x分之x-3x/(x-3)+(x+6)/x(x-3)=(x-3)/x两边同乘以x(x-3)x²+x+6=x²-6x+97x=3x=3/

等号前后同时分别计算减法得：(x+1)(x+3)分之2=(x+5)(x+7)分之2所以：(x+1)(x+3)=(x+5)(x+7)x^2+4x+3=x^2+12x+35x=-4

(x+6)/(x+1)-(3x²+10x+4)/(x²+3x+2)+(2x+1)/(x+2)=0(x+6)/(x+1)-(3x²+10x+4)/(x+1)(x+2)+(2

x+4=3x=7

1+1/(x+2)+1+1/(x+3)=1+1/(x+4)+1+1/(x+1)1/(x+2)+1/(x+3)=1/(x+4)+1/(x+1)1/(x+3)-1/(x+4)=1/(x+1)-1/(x+2

x+2分之x+1-x+3分之x+2=x+6分之x+5-x+7分之x+61-（x+2）分之1-[1-（x+3）分之1]=1-(x+6)分之1-【1-(x+7)分之1】从而(x+3)分之1-(x+2)分之

3x/(3x-1)+x/(x-1)=2都乘以(x-1)(3x-1)得：3x(x-1)+x(3x-1)=2(x-1)(3x-1)3x²-3x+3x²-x=6x²-8x+2解