解方程:4X-0.32 1.6=2.08步骤

X-1.5=4X=4+1.5X=5.5再答：5x=1.5x=1.5÷5x=0.3再问：嗯再答：3+x=5.4x=5.4-3x=2.4再答：x-6=7.6x=7.6+6x=13.6

(x+3)/(x+2)+(x+9)/(x+8)=(x+5)/(x+4)+(x+7)/(x+6)1+(x+5)/(x+2)(x+8)=1+(x+5)/(x+4)(x+6)x=-5再问：第二步那个1是怎么

将x-7/x-9分解成1+2/(x-9)其他分式同理则原方程等价于1/x-9+1/x-5=1/x-6+1/x-81/x-6-1/x-5=1/x-9-1/x-81/(x-5)(x-6)=1/(x-8)(

4x=6-144x=-8x=-2

((X-2)(X-4)-(X-3)^2)/(X-3)(X-4)=((X-5)(X-7)-(X-6)^2)/(X-6)(X-7),-1/(X^2-7X+12)=-1/(X^2-13X+42),6X=30

[1-1/(x-4)]+[1-1/(x-8)]=[1-1/(x-7)]+[1-1/(x-5)]1/(x-4)+1/(x-8)=1/(x-7)+1/(x-5)(x-4+x-8)/(x-4)(x-8)=(

4(123-x)=57+x492-4x=57+xx+4x=492-575x=435x=87

2x+4x+6x...+100x=1-(x+3x+5x+...+99x)x(2+4+6+...+100)=1-x(1+3+5+...99)x(2+4+6+...+100)+x(1+3+5+...+99

这道题不用那么复杂.先移项.(x-4)/(x-5)-(x-5)/(x-6)=(x-7)/(x-8)-(x-8)/( x-9)再通分.（x-4)(x-6)/(x-5)(x-6)-(x-5)(x

9x=90+4x9x-4x=905x=90x=18

4x=6x=6/4x=3/2x=1.5再问：/是什么再问：？再答：/就是除以再问：千

首先由题意得x+1≠0,x+7≠0,x+5≠0,x+3≠0,即x≠-1,x≠-7,x≠-5,x≠-3,则先简化方程(x+1+1)/(x+1)+(x+7+1)/(x+7)=(x+5+1)/(x+5)+(

7x=6x-4x7x=2xx=0

2x+4x+6x+8x+...+2010x+2012x=1013042x+2x+3x+4x+...+1005x+1006x=5065211006*1007x/2=506521x=1013042/100

左右两边同乘以(X-5)(X-6)(X-8)(X-9)得到(X-4)(X-6)(X-8)(X-9)-(X-5)(X-5)(X-8)(X-9)=(X-5)(X-6)(X-7)(X-9)-(X-5)(X-

6^x+4^x=9^x(2*3)^x+2^(2x)=3^(2x)3^(2x)-(2*3)^x-2^(2x)=0令3^x=a,2^x=b,并把a看成自变量,b看成常数a^2-ab-b^2=0这是一个一元

(x-4)/(x-5)-(x-5)/(x-6)=(x-7)/(x-8)-(x-8)/(x-9)1+1/(x-5)-1-1/(x-6)=1+1/(x-8)-1-1/(x-9)1/(x-5)-1/(x-6

2x+4x+6x+8x~+2010x+2012x=1013042（2+2012)×1006÷2×x=1013042x=1再问：可以分解仔细点吗？再答：（2+2012)×1006÷2×x=1013042

【解题思路】6^x=(2*3)^x4^x=(2*2)^x9^x=(3*3)^x同除以(2*3)^x,则4^x变换为(2/3)^x,9^x变换为（3/2)^x=((2/3)^x)^(-1)方程两边同除以

【解题思路】6^x=(2*3)^x4^x=(2*2)^x9^x=(3*3)^x同除以(2*3)^x,则4^x变换为(2/3)^x,9^x变换为（3/2)^x=((2/3)^x)^(-1)方程两边同除以