。(1)3x=2x-1 (2)4x-1=3x+1 (3)3x+2=2x-8 (4)6x-5=4+5x。 解:(1)3x—2x=-1 x=-1 检验:将x=-1代入原式得左边=3X(-1)=一3 右边2X(-1)一1=-2十(-1)=-3 得左边=右边 所以x=-1是原方程的解
(1); 3x=2x-1; 3x-2x=-1; x=-1; (2); 4x-1=3x+1; 4x-3x=1+1; x=2; (3); 3x+2=2x-8; 3x-2x=-8-2; x=-10; (4); 6x-5=4+5x; 6x-5x=4。16-x÷3=10 5x+3(x-2)=15.6 6x-48=5x+3 3x+2.7=5.94(并检验。x=18; 6-x÷3+(x÷3)=0+x÷3 &nbsp.7=5; &nbsp.7=3; X=1.6 &nbsp.94 3x=3; 8x=21.6+6 3X+12-12=5X-6-12 x=51; &nbsp.5X-3=3; 8x-6+6=15; x÷3×3=6×3&nbsp:把x=1; &nbsp.5X+0; &nbsp.5
(4)3x+2; 5x+3x-6=15; &nbsp.7; 2X÷2=18÷2 6x=5x+51 &nbsp.5X &nbsp.5 &nbsp.7 &nbsp.5 &nbsp.5X=33;3x+2; &nbsp.5-0; 2X=18 &nbsp.24+2.7=5; &nbsp.5÷0; &nbsp.7-2;&nbsp,左边=3×1; 3x÷3=3;&nbsp.24 6x-48+48=5x+3+48 16-x÷3-10=10-10 &nbsp.5X÷0; &nbsp.5X=0.24÷3 2X-18+18=0+18&nbsp.08代入方程3x+2; x÷3=6&nbsp.5-3 &nbsp.08是方程3x+2; 3+0; 8x-6=15.94-2; &nbsp.5X=3; &nbsp.08+2; &nbsp.6 &nbsp.7=5;
(3)6x-48=5x+3 &。解方程5x-2=3(x+2) 4x+3=-2(3x-2) 3x+2=-3(4x-3) 2(x-3)=-3(3x+。 恶5一就俄急用356办653
5X-2=2X-3 3X=-1 X=-1/3 代入原方程试试
5x-2=3(x+2); 5x-2=3x+6; 2x=8; x=4. 4x+3=-2(3x-2); 4x+3=4-6x; 10x=1; x=1/10. 3x+2=-3(4x-3); 3x+2=9-12x; 15x=7; x=7/15. 2(。
5x-2=3(x+2), 5x-2=3x+6, 2x=8, x=4, 20-2=18=3(4+2). 4x+3=-2(3x-2), 4x+3=-6x+4, 10x=1, x+1/10, 4×1/10+3=3.4=-2(-1.7)=-2(3/。
已知关于x的方程3x+2m=5x-2的解与方程4x-3=3x+1的解相同 (1)求m的值?
(2)求代数式(-3/1m)-(2-m)的值?。6x+7+5x=18 13x+14-5x=30 10x-8+4x=10 9x-9-7x=7 5x+6+4x。6X+5X=18-7 11X=11 X=113X-5X=30-14 8X=16 X=210X+4X=10+8 14X=18 X=9/79x-7x=7+9 2x=16 x=85X+4X=16-6+3 9x=13 x=13/99x-3x=7-6+5 6x=6 x=13/6x-2/6x=1-1/3 1/6x=4/6 x=45/10X+2/10x=0.4+0.3 3/10x=0.7 x=7/35/6x-2/6x=4/3+2/3 3/6x=6/3 x=4
- 4x =10.8 4x = 1.2 x = 0.3 检验: 4(3-0.3)/6 =(12 /6 =10.8 /6 =1.8 ③ 9(x+3)/2=18 9(x+3) = 36 9x + 27
6x+7+5x=186x+5x+7=18 11x+7=18 11x=18-7 11x=11 x=1。9-2(x+3)=x-(3+6x) 2(x-5)=3(5x+1)-33 9x-3(jpg" target="_blank" tle="点击查看大图" class="ikqb_img_alink"&回答 请检查一下你的第三小题。题目抄的不对。或者是题出错了。
jpg" target="_blank" title="点击查看大图" class="ikqb_img_alink"&评论 |。x=7方程: x/9=9 17-2x=3 5x+5=35 6x-7=5x+14 方程2.8+4x=8。.x/9=9 x=81 17-2x=3 2x=17-3=14 x=7 5x+5=35 5x=30 x=6 6x-7=5x+14 6x-5x=14+7=21 x=21 2.8+4x=8.8 4x=8.8-2.8 4x=6 x=1.5
x=7是方程17-2x=3 的解。2(X-5) =3(5X+1)- 33 9X-3(X-2)=6X+2 要过程的,谢谢了! 9-。有3个方程式是么0 0 1、2x-10=15x+3-33 2x-15x=-30+10 -13x =-20 x=20/13 2、9x-3x+6=6x+2 6x+6 =6x+2 卧槽 这怎么解? 3、9-2x-6=x-3-6x 3x =-3-9+6 3x=-6 x=-2
5-(1-3X)=3 要过程,4(3Y +2)-3(2+Y)=3+8Y 怎么解方程5(X+9)-3(9 +X)=2 解方程 3(X+(1-2X))=6 解方程 X-2(X-2(X-1))=3(1-X) 60 分类:。2-x/x-3整体+1/3-x=3(2)5x-4/2x-4=2x+5/3x-6整体-0.5解方程 - 。(2-x)/(x-3)+1/(3-x)=3 (2-x)/(x-3)-1/(x-3)=3 (2-x-1)/(x-3)=3 1-x=3x-9 4x=10 x=2.5 (5x-4)/(2x-4)=(2x+5)/(3x-6)-0.5 3(5x-4)/(6x-12)=2(2x+5)/(6x-12)-3 3(5x-4)/(6x-12)-2(2x+5)/(6x-12)+3=0 (15x-12-4x-10)+3(6x-12)=0 11x-22+18x-36=0 29x=58 x=2 经检验x=2是增根。﹙5x-4﹚/﹙x-3﹚+1/3=﹙6x+5﹚/﹙3x-9﹚原式=3(5x-4)/(3x-9)-﹙6x+5﹚/﹙3x-9﹚=-1/3(15x-12-6x-5)/3x-9=-1/3(9x-17)/3x-9=-1/39-3x=27x-51-3x-27x=-51-9-30x=-60x=2
两边同乘以3x-9得3(5x-4)+(x-3)=6x+515x-12+x-3=6x+510x=20x=2经检验:x=2是原方程的根所以,原方程的根为x=2。解方程.X--1/5X=3/10,X/2/9=6/7,X+1/6X=7/6X-1/5X=3/104/5X=3/10X=3*5/4*10X=3/8X/2/9=6/7X=6*2/7*9X=4/21X+1/6X=7/67/6X=7/6X=1很高兴为您解答,祝你学习进步!有不明白的可以追问!如果您认可我的回答。请点击下面的【选为满意回答】按钮,谢谢!
x-1/5x=3/10 (1-1/5)x=3/10 4/5x=3/10 x=(3/10)÷(4/5) x=3/8x/2/9=6/7 ? x/2=(6/7)×9 x/2=54/7 x=(54/7)×2 x=108/7 ? x=(6/7)×(9。
解方程。X--1/5X=3/10解:方程两边同乘10x,得2(x-1)=3x解得 x=-2检验,当x=-2时,10x=10*(-2)≠0∴原方程的解为x=-2 X/2/9=6/7解:。扫二维码下载作业帮
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试题分析：先把分子分母因式分解和除法运算化为乘法运算，再约分后化为最简分式，然后利用x+1与x+6互为相反数可得到原式的值．
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