x-1/9=1/3

来源：蜘蛛抓取(WebSpider) 时间：2016-05-21 10:17 标签： 1/x
数学题目很简单3/26x（1/4 + 5/6） =
14/9 x 7/23 x 9/14 =
1/25 x 7/18 x 75 =
1/3 x 2/5 x 3 =
4/7 x 5/13 x 14 =
5/8 x 7/9 x 3/7 =
16 x 1/3 x 9 =
(5/8 x 3/7）x 8/5 =
2/3 x 14 x 5/7
24 x(3/8-1/3)
5/13-5/13 x 5/18
67 x 23/66
14/15 x (1/2-3/7)
=要简算的哦!满意的话加100写清楚点
小赞爱杰希36
3/26x（1/4 + 5/6） =3/26*(3+10)/6=3/26*13/6=1/4
14/9 x 7/23 x 9/14 =14/9*9/14*7/23=1*7/23=7/23
1/25 x 7/18 x 75 = 1/25*75* 7/18=3* 7/18=7/6
1/3 x 2/5 x 3 =1/3*3*2/5=1*2/5=2/5
4/7 x 5/13 x 14 =4/7*14*5/13=8*5/13=40/13
5/8 x 7/9 x 3/7 =5/8*1/3=5/24
16 x 1/3 x 9 =16*3=48
(5/8 x 3/7）x 8/5 =5/8*8/5*3/7=1*3/7=3/7
2/3 x 14 x 5/7
24 x(3/8-1/3)
=24*3/8-24*1/3=9-8=1
5/13-5/13 x 5/18
=5/13(1-5/18)=5/13*13/18=5/18
67 x 23/66
=(66+1)*23/66=66*23/66+1*23/66=23+23/66=23又23/6614/15 x (1/2-3/7)=14/15*1/2-14/15*3/7=7/15-2/5=（7-6）/15=1/15
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扫描下载二维码4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7= 8/5x15/4= 20/9x21/5= 3/11x2/1= 50/19x19/10= 24/13x26/8= 40/11x22/10= 100/16x16/25= (这些是那一块的）3/1x5/3+2= 2/1+3/1x5/2= 14/9x3/1+3/2= 7/5-9/5x7/5= 1-7/5x25/21= 6/1x(5-3/2)= 8/7x7+8/3= (6+5/2)x8/3= (这些要计算的,不能直接等答案）
3/11x2/1=6\11 50/19x19/10= 5 24/13x26/8=6 40/11x22/10=8 100/16x16/25=4 3/1x5/3+2=5+2=7 2/1+3/1x5/2=2+7.5=9.5 14/9x3/1+3/2=14\3+3\2=37\6 7/5-9/5x7/5=-28\25 1-7/5x25/21=1-5\3=-2\3 6/1x(5-3/2)=6x-7\2=-21 8/7x7+8/3=8=8\3=32\3 (6+5/2)x8/3=17\2x8\3=68\3
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扫描下载二维码(x-1/2y-1)(x-1/2y+1)-(x-1/2y+1)^2,其中x=1.5,y=3.9,先化简再求值_百度知道
(x-1/2y-1)(x-1/2y+1)-(x-1/2y+1)^2,其中x=1.5,y=3.9,先化简再求值
过程详细，请各位大神帮帮忙
提问者采纳
-1²=（X-1/2y)=-2-2x+y把数值代入得;2y)²2y+1)-(x-1/2y+1)&#178.9=-2+0;2y-1)(x-1/-2(x-1/2y)²-1-(x-1/2y）²+2(x-1/2y)+1]=（X-1/2y)²=(x-1&#47.9=-2-3+3;-1-[(x-1/-(x-1&#47.9=-1(x-1&#47.5)+3;2y)&#178：原式=-2-2*(1;2y)-1=-2-2(x-1/2y+1)&#178
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=(x-1/2y)²2y)-1=2(x-1/-(x-1/2y)+1]-[(x-1&#47.9-2=-2;2y)²-2(x-1/2y)+1]²-1&#178原式=[(x-1/2y)-1][(x-1&#47.5-3;2y)-2=2x-y-2=2*1
(x-1/2y)²-2(x-1/2y)-1，这个不可以这样拆吧，貌似不对的感觉哎
哦，对不起错了原式=[(x-1/2y)-1][(x-1/2y)+1]-[(x-1/2y)+1]²=(x-1/2y)²-1²-(x-1/2y)²-2(x-1/2y)-1=-2(x-1/2y)-2=-2x+y-2=-2*1.5+3.9-2=-1.1
提取公因式（x-y/2+1）[（x-y/2-1）-（x-y/2+1）]=-2（x-y/2+1）=-2（1.5-3.9/2+1）=-5+3.9=-1.1
麻烦些个过程咧
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出门在外也不愁帮我解一下这些方程,很急,要过程,谢谢1)0.25r-0.32=0.45r+0.192)15.3c+4.3=16.9-16.23)-7/8k+2=1-3/4k4)1又1/2p+1/4=2又1/4p-5/25)2(q-0.1)=3(0.3-q)6)1/2(x+1)=1/3(x-1)7)0.2(4y+3)=0.6(4y-1)8)2分之2x-1=3分之2x+19)4(s+1.6)=-3(s-1.2)10)6.2(2g-3)=4.2(2g+3)
1.0.25r-0.45r=0.19+0.32-0.2r=0.51r=-2.55
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对不起没采纳，深感抱歉
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