首页
登录
职称英语
4x - 2y = 6 -6x + 5y= 7x=11/2y=8This problem is a little trickier than the firs
4x - 2y = 6 -6x + 5y= 7x=11/2y=8This problem is a little trickier than the firs
游客
2024-01-12
38
管理
问题
4x - 2y = 6 -6x + 5y= 7
选项
答案
x=11/2
y=8
解析
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.
4x - 2(8)= 6
4x - 16 = 6
4x= 22
x=22/4, or 11/2
转载请注明原文地址:https://tihaiku.com/zcyy/3356113.html
相关试题推荐
Excessinventory,amassiveproblemformanybusinesses,hasseveralcauses,
Excessinventory,amassiveproblemformanybusinesses,hasseveralcauses,
Excessinventory,amassiveproblemformanybusinesses,hasseveralcauses,
Theproblemthatenvironmentaleconomicsaimstoremedyisthefollowing:people
Mechanicorp’snewestproductcostssolittletomakethatitappearsdoubtfult
AutomobileexhaustisaseriouspollutionprobleminRiverside,andinstituting
Politician:Nobodycandenythathomelessnessisaproblemyetthereseemstobe
Whileallstatesfacesimilarindustrialwasteproblems,thepredominatingindus
CartographershavelongstruggledwiththeproblemofhavingthesphericalEarth
Dr.Sayre’slecturerecountedseverallittle-knownepisodeintherelationsbetw
随机试题
Americansbelievetimeisalimitedresource;theytrytoconserveandmana
[img]2014m3x/ct_eyyjscm_eyyjscd_0125_201312[/img][br]【D2】[originaltext]Mo
Thehigheranarea’slivingstandardis,______(这一地区的辍学率就越低).theloweritsdropou
监理资料移交书属于B6类资料。
以下哪个不是日常生活活动能力评定量表?( )A.Barthel指数 B.Ka
按照目前的使用目的、使用状态持续下去,在可预见的未来不会改变的假设是()。
共用题干 年初某家电商场决定新增电冰箱销售业务,据市场调查资料显示:作为同行企
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
某矿山公司对近几年的不安全行为事件(意外事件)进行了回顾和统计,发现公司平均每年
(2017年)采用类比法确定某污水处理厂污泥产生量,类比对象应具有的条件有()
最新回复
(
0
)