x+y+z=4/7(3x+y+2z)-1/7(5x-3y+z)
=15
已知3x+y+2x=28,5x-3y+z=7,求x+y+z的值
已知3x+y+2x=28,5x-3y+z=7,求x+y+z的值
數(shù)學(xué)人氣：249 ℃時(shí)間：2020-06-06 12:30:52
優(yōu)質(zhì)解答
我來(lái)回答
類(lèi)似推薦
- 已知3x+y+2z=28,5x-3y+z=7,求x+y+z的值
- 已知3x+y+2z=28,5x-3y=7,求x+y+z的值
- 已知2x-3y+2z=0,3x+y-5x=0,求x:y:z的值.
- {2x+3y=16① x+4y=13② {3x-y=7① 5x+2y=8② {x-3y=5① 2x+y=3② {x+y=5① 2x+y=3②
- （1）﹛2x-y=5 （2） 4x-y=1 (3)5x+y=2 7x-3y=20 y=2x+3 x-3y=4 (4)3x-2y=1 2x+3y=-27
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語(yǔ)翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個(gè)數(shù)據(jù)與平均數(shù)之差的平方的平均數(shù)
- 函數(shù)y=f(x)與它反函數(shù)y=f^-1(x)怎么讀?
- These are photos of my families.Look at them 改錯(cuò)
猜你喜歡
- 1平面與平面重合,是否屬于平行一類(lèi)?那重合的兩直線,也屬于平行一類(lèi)的嗎?
- 2非洲每年因饑餓死亡的人數(shù)及現(xiàn)在饑餓人口數(shù)量拜托各位了 3Q
- 3decide to do sth.還=什么
- 4(7/8)o you think of london?B:5.____london is one of the liveliest cities
- 5啤酒可以托運(yùn)嗎
- 6邊長(zhǎng)為2√6的等邊三角形的中心到一邊的距離為?
- 7please give your hand to help me
- 8已知2的X次方等于3的Y次方等于6的Z次方不等等于1,證明X分之一加Y分之一等于Z分之一.
- 9幫我做做?
- 10機(jī)械分析天平TG628A的使用說(shuō)明書(shū)
- 11in winter ,we wear warm coats to protect our bodies_.
- 12( )was most importance to her ,she told me,was her family it this what as