91除以x等于1点3
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x-2除以6-x+2除以3等于1+x-1除以2两边乘6x-2-2(x+2)=6-3(x-1)-x-6=9-3x3x-x=9+62x=15x=7.5
3(5x+3)+2(1+7x)x=-7
解题步骤如下:方程两边同时通分得:[1+3(x-2)]/(x-2)=(x-1)/(x-2)整理得:(3x-5)/(x-2)=(x-1)/(x-2)所以有3x-5=x-1……(1)并且x不等于2由(1)
是1/x+1/y=5么?题不对吧
1/(x-1)+1/(x-4)-[1/(x-2)+1/(x-3)]=0通分(2x-5)/(x²-5x+4)-(2x-5)/(x²-5x+6)=0(2x-5)[1/(x²-
91/x=1.3x=91/1.3x=70
4/(x-1)-1/(2x-1)-2=4(2x-1)/(x-1)(2x-1)-(x-1)/(x-1)(2x-1)-2(x-1)(2x-1)/(x-1)(2x-1)=(8x-4-x+1-4x²
是(x-1)/(x-2+1)=3吗x-1=3x-3无解
[x-1]/(x-3)=m^2/(2x-6)2(x-1)=m^2当X-3=0,即X=3时方程有增根,代入得:m^2=2(3-1)=4m=+2或-2
解方程:1/(X-1)+2/(X-2)=3/(X-1)2/(X-2)=2/(X-2)变成了:X-2=X-1方程无解的,是题目有问题吧
算是啊x/3=6x+1x=18x+317x=-3x=-3/17
x等于2.1除以3
(x+1)/2=(3x-1)/2-1x+3=3x-1x=2
解题思路:去分母进行求解解题过程:答案见附件最终答案:略
将3x/(x-1)-x/(x+1)通分得
x+x/2+x/3=5511x/6=55x=30
x/(x-1)-3/(1-x)=3可以化为x/(x-1)+3/(x-1)=3(x+3)/(x-1)=3移项,解之得x=3
(3×-2.9)÷4=2.53×-2.9=2.5×43×-2.9=103×=10+2.93×=12.9×=4.3
(1-x)/3=2-x1-x=6-3x2x=5x=2.5再问:你在验算一下再答:左边=(1-2.5)÷3=-1.5÷3=-0.5右边=2-2.5=-0.5左=右再问:1-2.5减不够再答:额,负数没学