x-2分之3x-3+(x-8)分之(x-5)=x-4分之3x-9+(x-6)分之(x-3) 求x的值

来源:学生作业帮助网 编辑:作业帮 时间:2024/10/04 05:15:29
x-2分之3x-3+(x-8)分之(x-5)=x-4分之3x-9+(x-6)分之(x-3) 求x的值
xRJ1~=IC$K}}Y,BEDZ*m]EX*⩯kl[/|}7a6Pۊt/ m =%Bm@ Ieay6_;xy[WG>r$B+}v *J(!S|5c R'룽w{ƛ{zѻ7aI4UtK+dv Nf53U">&zCw\TRgnم* UzH(yG BAh(aT*g~b0I

x-2分之3x-3+(x-8)分之(x-5)=x-4分之3x-9+(x-6)分之(x-3) 求x的值
x-2分之3x-3+(x-8)分之(x-5)=x-4分之3x-9+(x-6)分之(x-3) 求x的值

x-2分之3x-3+(x-8)分之(x-5)=x-4分之3x-9+(x-6)分之(x-3) 求x的值
(3x-3)/(x-2)+(x-5)/(x-8)=(3x-9)/(x-4)+(x-3)/(x-6)
(3x-3)/(x-2)-(3x-9)/(x-4)=(x-3)/(x-6)-(x-5)/(x-8)
3[(x-1)/(x-2) -(x-3)/(x-4)]=(x-3)/(x-6)-(x-5)/(x-8)
左右同时通分得
3[(x-1)(x-4)-(x-3)(x-2)]/(x-2)(x-4)=[(x-3)(x-8)-(x-5)(x-6)]/(x-6)(x-8)
3(x²-5x+4-x²+5x-6)/(x-2)(x-4) =(x²-11x+24-x²+11x-30)/(x-6)(x-8)
3×(-2)/(x-2)(x-4)=(-6)/(x-6)(x-8)
1/(x-2)(x-4)=1/(x-6)(x-8)
(x-2)(x-4)=(x-6)(x-8)
x²-6x+8=x²-14x+48
-6x+14x=48-8
8x=40
x=5