2.(x-4) - (x+5)=-13
cac ban cho minh cach lam nha
cam on
tim x thuoc Z biet:
|x-5|+x+3=16
|x-4|>x+2
||x+5|-4|=3
Cach lam nua nhe
minh chua biet cach lam,cac ban phaiviet cach lam vao minh moi tick
ko bat buoc lam tat ca cac cau
Tìm x là stn
6x : 33 :4 = 2
3.(x-5)3=81
7x - 2x=617: 615+ 38 : 26
Giup minh vơi a , co cach lam nhe a
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giup minh nha
cam on ban nha
6/5+7/6+8/7+......+2008/2007
Day la bai tinh bang cach thuan tien nhat nhe.
Cach ban chi cho minh cach lam va ket qua nhe.
Cam on cac ban nhieu.
\(\dfrac{2}{3}\)x-\(\dfrac{3}{2}\)x=\(\dfrac{5}{12}\)
GIUP MIK NHA
CAM ON NHIU
`2/3x-3/2x=5/12`
`=>-5/6x=5/12`
`=>x=-1/2`
Vậy `x=-1/2`
2/3x-3/2x=5/12
x.(2/3-3/2)=5/12
x.-5/6 =5/12
x =5/12:-5/6
x =-1/2
a, 4 2/5 + 5 2/3 + 2 3/4 + 3/5 + 4/12 + 1/4 = ?
b, 41/27 x 13/18 - 13/18 x 14/27 =?
CAC BAN HAY LAM DIEN GIAI RA CHO MINH NHE ....... MINH RAT CAM ON CAC BAN
a)\(4\frac{2}{5}+5\frac{2}{3}+2\frac{3}{4}+\frac{3}{5}+\frac{4}{12}+\frac{1}{4}\)
\(=\left(4\frac{2}{5}+\frac{3}{5}\right)+\left(5\frac{2}{3}+\frac{4}{12}\right)+\left(2\frac{3}{4}+\frac{1}{4}\right)\)
\(=5+6+3=14\)
b)\(\frac{41}{27}\cdot\frac{13}{18}-\frac{13}{18}\cdot\frac{14}{27}\)
\(=\frac{13}{18}\cdot\left(\frac{41}{27}-\frac{14}{27}\right)\)
\(=\frac{13}{18}\cdot1=\frac{13}{18}\)
Tim x thuoc Z biet:
a, |x-5|+x+3=16
b, |x-5|-7≥9
c, |x-4|>x+2
d, ||x+5|-4|=3
Lam nhanh ho minh
AI LAM NHANH VA CACH LAM DAY DU MINH SE TICK CHO
kHONG CAN LAM HET TAT CA CAC CAU
giup minh nhar may ban minh cam on nhieu lam lun
chi minh cach tinh bai nay nhe : -7/12 =x/36
thanks ca nha
nhân chéo chia ngang
x= -7*36/12=-21
muốn chắc chắn thì thử lại
\(\frac{-7}{12}=\frac{21}{36}\)theo quy đồng cũng đúng
Viết lại là:
\(\frac{-7}{12}=\frac{x}{36}\)
=> \(-7.36=12.x\)
=> \(-252=12.x\)
=> \(x=\frac{-252}{12}\)
=> \(x=-21\)
day mik cach lam dang nay voi cac ban
tim a va b sao cho
(x3 +ax2-3x+b) :(x-2) du 5 va : (x-1) du -4