5x 2m=3x-7和方程3x
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![5x 2m=3x-7和方程3x](/uploads/image/f/352136-56-6.jpg?t=5x+2m%3D3x-7%E5%92%8C%E6%96%B9%E7%A8%8B3x)
3x+1=6x+13x+2m=6x+1-3x=02m=1x=0m=0.5
(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
由一元一次方程的特点得,2m-1=1,解得:m=1,∴2x+1=7,解得x=3.故答案为:3.
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)(
((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
我给个思路吧(X+2-1/X+2)-(X+3-1/X+3)=(X+6-1/X+6)-(X+7-1/X+7)1-1/(X+2)-1+1/(X+3)=1-1/(X+6)-1+1/(X+7)剩下的就自己解决
110x-5x=-35x=-3x=-3/52-6=8x-7x-6=xx=-6
由题意,得2m−3n=8m+3n=−5,解得m=1,n=-2,∴n2m=4.
∵x2m-3+6=m是关于x的一元一次方程,∴2m-3=1,解得m=2,∴原方程可化为x+6=2,解得x=-4,∴原式=(-4+3)2010=1.
4x+2m=3x+1(1)6m=6x+1(2)由(1)得x=1-2m(3)把(3)代入(2)得m=7/18
2x²+7x+1=0判别式=49-8=41x=(-7±√41)/4x1=(-7+√41)/4,x2=(-7-√41)/43x²-1=2x+53x²-2x-6=0判别式=4
通分化简得到(x+1)(x+2)=(x+5)(x+6)3x+2=11x+308x=-28x=-7/2
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)+(
方程4x+2m=3x+1解为x=1-2m;方程3x+2m=4x+1解为x=2m-1;所以1-2m=2m-1,得m=0.5,方程的解为x=0.
2(x-3)(x+5)=x^2+(x+2)(x-2)+(x+7)2(x^2+2x-15)=x^2+x^2-4+x+72x^2+4x-30=2x^2+x+33x=33x=11
由题意,得2m+3=1,5n-9=1,解,得m=-1,n=2.∴m2+n2=5.
焦点位于x轴上的椭圆则,m>n当m=2时,n=1;当m=3时,n=1,2;当m=4时,n=1,2,3;共6个故选A.
X-1/X-2-(X-2)/(X-3)=(X-5)/(X-6)-(X-6)/(X-7)(X-1)(X-3)-(X-2)²/(X-2)(x-3)=(X-5)(X-7)-(X-6)²/
∵方程5x2m-1+1=7是关于x的一元一次方程,∴2m-1=1,解得,m=1.故答案是:1.