4x-5=2分之9x-4

X+1分之X+2+X+7分之X+8=X+5分之X+6+X+3分之X+4等式两边各2个x常数和都为10所以都约去得1／x＋7／x＝5／x＋3／x为恒等式所以x为不等于零的任意实数再问：������ڶ�Щ

(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/2-3/4=2-5/84x-6=11x=17/4

不知道拟你题目表述对没有.同乘以x(x+5)：2x=x+5x=5检验：x=5符合题意同乘以x-4：x-1=32x=33检验：x=33符合题意

4分之3X+2分之1X=255/4x=25x=25*4/5x=20X-8分之1=4分之3x=3/4+1/8x=7/8X+4分之3X=0.25x=1/4-3/4x=-0.5X-5分之2X=10分之9x=

请在此输入您的回答

原题应为：(X+2)/(X+1)+(X+5)/(X+4)=(X+3)/(X+2)+(X+4)/(X+3)(X+2)/((X+1)=1+1/(X+1),以下同理则原式可化为：1/(X+1)-1/(X+2

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

希望能帮上忙,第一步x-7/x-9+x-3/x-5=x-4/x-6+x-6/x-8第二步(x-9)+2/x-9+(x-5)+2/x-5=(x-6)+2/x-6+(x-8)+2/x-8第三步1+2/x-

由(x-4)/(x-5)-(x-5)/(x-6)=(x-7)/(x-8)-(x-8)/(x-9)得：（X-4）/（X-5）-（X-7）/（X-8）=（X-5）/（X-6）-(X-8）/（X-9）即：【

因为(x-4)/(x-5)=[(x-5)+1]/(x-5)=1+1/(x-5)……所以原方程可化为1+1/(x-5)-1-1/(x-6)=1+1/(x-8)-1-1/(x-9)1/(x-5)-1/(x

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=123/14

(x-4）/(x-5)-(x-5)/(x-6)=(x-7)/(x-8)-(x-8)/(x-9)对方程两边各自通分：[(x-4)(x-6)-(x-5)(x-5)]/[(x-5)/(x-6)]=[(x-7

每个分式减去1(x-4-x+5)/(x-5)+(x-8-x+9)/(x-9)=(x-7-x+8)/(x-8)+(x-5-x+6)/(x-6)1/(x-5)+1/(x-9)=1/(x-8)+1/(x-6

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

4分之5X-X+3=3分之2X-7-6分之X-25X/4-X+3=(2X–7)/3-(X-2)/615X-12X+36=4(2X–7)-2(X-2)3X+36=6X–243x=60X=20

本人一次只回答一个算了吧或者你分开提问x/(x+2)=x/(x-1)两边乘(x+2)(x-1)x²-x=x²+2x3x=0x=0经检验,x=0是方程的解

X=4原式=(X-1)/(X-2)-(X-2)/(X-3)=(X-4)/(X-5)-(X-5)/(X-6)左边通分=[X^2-4X+3-X^2+4X-4]/[(X-2)(X-3)]=-1/[(X-2)