妹紙,以后別用.用:哈,差點就認(rèn)不出這題了………………
1:5a+(2-4a)=0
5a+(2-4a)= 5a+2-4a=a+2=0,所以a=-2
2:25b-(b-5)=29
25b-(b-5)-29=25b-b+5-29=24b-24=0,所以b=1
一元一次方程:1.5a+(2-4a)=0 2.25b-(b-5)=29
一元一次方程:1.5a+(2-4a)=0 2.25b-(b-5)=29
數(shù)學(xué)人氣:718 ℃時間:2020-06-11 16:46:14
優(yōu)質(zhì)解答
我來回答
類似推薦
- (1)5a+(2-4a)=0 (2) 25b-(b-5)=29 (3) 7x+2(3x-3)=20 (4)8y-3(3y+2)=6
- 一道數(shù)學(xué)題,一元一次方程題
- 1.解下列方程:(1)5a+(2-4a)=0 (2)25b-(b-5)=29 (3)7x+2(3x-3)=20 (4)8y-3(3y+2)=6 2.甲、乙倆人共有
- 一道初一元一次方程數(shù)學(xué)題.
- 5a+(2-4a)=0 請問這道一元一次方程怎么算...
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個數(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
猜你喜歡
- 1平面與平面重合,是否屬于平行一類?那重合的兩直線,也屬于平行一類的嗎?
- 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啤酒可以托運嗎
- 6邊長為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機械分析天平TG628A的使用說明書
- 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