作业帮2x＋7=3＋4x怎么解
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/12 17:41:40
(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
((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
4+6X（3x-2）=16x4+18x-12=16x18x-16x=12-42x=8x=4
这个不还解决0.906-0.8520.287-0.609*i-1.735*i-0.5641.735*i-0.5640.609*i+0.287你看可以吗?
x-2x-7x=4x-5656=4x+7x+2x-x56=12xx=14/3
4/7x-12+6/7x-18=x10/7x-30=x3/7x=30x=70
2×(7x－4x)＝186x=18x=36x＋8x＝1.4×314x=4.2x=0.3
3x-2x(x-1)=4*1.5-7x3x-2x^2+2x=6-7x2x^2-12x+6=0(x-3)^2=6x=3±√6再问：看不懂啊
3X/8+2X/8=165X/8=16X=16*8/5X=128/5
再问：2x是怎么得来的
通分得[（x-8）(x-4)-(x-9)(x-3)]/(x-3)(x-4)=[(x+7)(x+3)-(x+2)(x+8)]/(x+8)(x+3)解得5/(x-3)(x-4)=5/(x+8)(x+3),
(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)[（x-8）(x-4)-(x-9)(x-3)]/(x-3)(x-4)=[(x+7)(x+3)-(x+2)(
1.2x+4-x=9合并,x+4=9∴x=52.x+6=4+3x移项,-2x=-2∴x=1:.
设t=(x-1)/x,则(7x-7)/2x=7t/2所以t-7t/2+3=0即t=6/5所以(x-1)/x=6/5x=-5再问：步骤再完善一点好吗？再答：设t=(x-1)/x，则(7x-7)/2x=7
7{x+6}-3x=4{2x+5}7x+42-3x=8x+204x+42=8x+2042-20=8x-4x22=4xx=5.5
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)+(
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^
系数变成整数然后十字相乘
x=28再问：写清楚解答过程啊再答：25/28x=x-33=x-25/28x3=3/28xx=3*28/3x=28
等号右边的第一个x+3应为x+5吧?拆项：1+1/(x+1)+1+1/(x+7)=1+1/(x+5)+1+1/(x+3)1/(x+1)+1/(x+7)=1/(x+5)+1/(x+3)通分：(2x+8)