x减去11分之2等于27
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![x减去11分之2等于27](/uploads/image/f/900664-16-4.jpg?t=x%E5%87%8F%E5%8E%BB11%E5%88%86%E4%B9%8B2%E7%AD%89%E4%BA%8E27)
(x+1)/0.3分子和分母同时扩大10倍则为(10x+10)/3同理(0.1x+0.2)/0.05分子和分母同时扩大100倍则为(10x+20)/5(10x+10)/3-2x=(10x+20)/5方
7/11-(2/5-4/11)=7/11-2/5+4/11=1-2/5=3/5
把x移到一边3分之2减3等于8x减2分之1x-7/3=15x/2x=-14/45
由2x^2-3x-4=0得:x^2-2=3x/2所以x-2/x=(x^2-2)/x=(3x/2)/x=3/2
x-5/8+1/12=2/3x=5/8-1/12+2/3x=15/24-2/24+16/24x=29/24
你要说的是:(x+2)分之(x+1)减去(x+3)分之(x+2)等于(x+7)分之1减去(x+6)分之1解方程(x+1)/(x+2)-(x+2)/(x+3)=1/(x+7)-1/(x+6)通分得[(x
2x/5-8/15=4/5×1/22x/5-8/15=2/52x/5=2/5+8/152x/5=14/15x=14/15÷2/5x=7/3
再问:真分数再答: 再答:亲,能采纳吗?再答:谢谢呀
解分式方程输入很辛苦.经检验X=7/2是原方程的解.
4(x+y)-3(x-y)=14x+7y=14(x+y)/2+(x-y)/3=6两边同乘以6,得3(x+y)+2(x-y)=365x+y=36则x+7(36-5x)=14x=7,y=1
(5/12-1/4)*x=1/31/6*x=1/3x=22/3-8x=x/22/3=8.5xx=1/51
(x-1)/3-(x+2)/6=(4-x)/2等式两边同乘6得:2(x-1)-(x+2)=3(4-x)去括号:2x-2-x-2=12-3x移项:4x=16x=4
x-(x-1)/2=2-(x+2)/3等式两边同时乘以6得6x-3(x-1)=12-2(x+2)6x-3x+3=12-2x-43x+3=8-2x5x=5x=1
(x^2-1)/2-(x-2)/3=x^23x^2-3-2(x-2)=6x^23x^2-3-2x+4=6x^23x^2+2x-1=0(3x-1)(x+1)=0所以x=1/3或x=-1
2x的平方减去2分之1等于02x^2=1/2x1=1/2,x2=-1/2
再问:l真的对吗再答:==
(x-1)(x-3)(x-4)(x-5)-(x-1)(x-2)(x-3)(x-5)=(x-1)(x-2)(x-4)(x-5)-(x-1)(x-2)(x-3)(x-4)(x-1)(x-3)(x-5)(x
(2x+1)/3-(5x-1)/6=1两边乘64x+2-5x+1=6-x=3x=-3
2x/9-7x²/27=16两边乘277x²-6x+432=0判别式=(-6)²-4×7×432
【x/(x-2)】-1/(x平方-4)=1【x/(x-2)】-1/【(x-2)(x+2)】=1x(x+2)-1=(x-2)(x+2)x^2+2x-1=x^2-42x=-3x=-1.5