首页
登录
职称英语
4x-2y=6 -6x+5y=7 This problem is a little trickier than the first, as you
4x-2y=6 -6x+5y=7 This problem is a little trickier than the first, as you
游客
2025-02-24
9
管理
问题
4x-2y=6 -6x+5y=7
选项
答案
This problem is a little trickier than the first, as you cannot simply change the sign of one of the equations to isolate one of the variables. In this situation, you have to make the coefficients the same through multiplication. Since you know that 4 and 6 both go into 12, use the x term. Multiply the top equation by 3, and the bottom by 2:
12x-6y=18
-12x+10y=14
Add the two equations together (note that the x terms cancel out):
4y=32
y=8
Finally, choose one of the original equations, substitute 8 for y, and solve for x.
[*]
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3970849.html
相关试题推荐
231.2-198.7=_____32.5Thisisasimplesubtractionproblem.Tosolvethiswithout
(2.50×104)+(1.25×103)=_____20Thisproblemcanbesetupas[img]2014m5x/ct_eg
Forwhichvaluesofxis6x-3>4x+5?x>4Solvethisproblemalgebraically,a
4x-2y=6-6x+5y=7x=11/2y=8Thisproblemisalittletrickierthanthefirs
x/4=-Solveforx.-24Tosolvethisproblem,multiplybothsidesby4togetrid
3x-17=4Solveforx.21Tosolvethisproblem,firstisolatetheunknownnumber
[img]2014m9x/ct_egreqj_egreqbj_0016_20148[/img][br]BInthisproblemyouareas
Convert6milesperhourtofeetpersecond.8.8Thesolutiontothisproblemuses
Oneencouragingsignintheproblemofchaosamongthesoldiers’rankswastheir
Theywerecertainthatthisproblem,likesomanyother______problems,didnot
随机试题
CustomsofficersataLondonairportyesterdayfound$500000worthofdrug
DemandsforstrongerprotectionforwildlifeinBritainsometimeshidethe
[originaltext](16)Foreignaidisanimportantpartofinternationaleffort
DearMr.Li,ThefourthannualNetworkingTechnologyConferencewillbeheld
虚拟银行virtualbank
不易受广告和其他促销方式的影响的消息者属于()A.习惯型 B.理智型
化学药颗粒剂质量检查项目不包括A.干燥失重B.溶化性C.崩解度D.粒度E.装量差
近日,某市一商业街出现了一个街头卖艺表演的临时摊点。一名外地中年男子在每天下午人
企业将土地使用权用于自行开发建造自用厂房的,该土地使用权与厂房应分别进行摊销和提
关于肉毒杆菌,下列哪项是错误的A.产生外毒素 B.兼性需氧 C.严格厌氧
最新回复
(
0
)