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
23
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
TheUnitedStatesiswellknownforitsnetworkofmajorhighwaysdesignedt
[originaltext]M:I’dliketobuythiswatchforBonnie’sbirthday,butI’m$20
根据《水利工程质量事故处理暂行规定》,当发生小于一般质量事故的情况时称为(
有关发票印制、保管的说法正确的有( )。A、印有本单位名称的增值税普通发票的发票
悬臂式和扶壁式挡土墙断面尺寸检查方法和频率为尺量长度不大于50m时测10个断面及
在教育起源的认识上,教育学史上有哪几种经典的观点?() A.神话起源说 B.
现实生活中,有大量对个人的退休生活带来影响的因素,这些因素构成了对退休养老规划的
D
回答下列问题。 下列有关投入产出表的总量平衡关系中正确的是( )。(多选题)
“大红袍”入选“武夷山水”品牌以来,“借茶兴旅、以旅促茶”成为武夷山产业发展的鲜
最新回复
(
0
)