3x-4分之5x=4-3x分之1-2
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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
用(2x-4)乘以10=3x乘以5,20x-40=15x20x-15x=405x=40x=8
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
12分之x=18x=18×12x=216
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
(1)2x/(x+1)=12x=x+1x=1(2)x/(x-2)-1/(x²-4)=1x(x+2)-1=x²-4x²+2x-1=x²-42x=-3x=-3/2(
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
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-
2x/3=x²/12+3/x²+4/xx²/12+3/x²=2x/3-4/xx²/4+9/x²=2x-12/x(x/2-3/x)²
(x+5)/(x+4)+(x+6)/(x+5)=(x+4)/(x+3)+(x+7)/(x+6)1+1/(x+4)+1+1/(x+5)=1+1/(x+3)+1+1/(x+6)1/(x+4)+1/(x+5
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/(x-2)=(x-4)/(x-5)方程两边同乘(x-2)(x-5),得:x(x-5)=(x-4)(x-2)x^2-5x=x^2-6x+8x=8x/(x-3)=(x+1)/(x-1)x^2-x=x^
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
两边乘3分之205x=4(x+10)5x=4x+4×105x-4x=40x=40
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)
4x+3x=28/37x=28/3x=16此答案绝对正确