a co tong so x ,y z, la 180 biet tong x, y gap 1,456 lan z . Tim x, y, z
Những câu hỏi liên quan
tim so tu nhien biet tong cac chu so cua x=y,tong cac chu so cua y=z va x+y+z=60
Tim so tu nhien x, biet rang tong cac chu so chua x bang y, tong cac chu so cua y bang z va x+y+z =60
Tim so tu nhien x biet tong cac chu so cua x bang y , tong cac chu so cua y bang z va x+y+z=60
trinh bay cach lam ra nhe
tim hai so Y va Z biet tong hai so la 224 va ti le cua Y&Z la 5/3?
Bài giải :
Y là : 224 : (5+3) x 5 = 140
Z là : 224 - 140 = 84
Vậy : Y = 140
Z = 84 nhé bạn
Cau 1:
- 2-(9-36)
Cau 2: tim cac so tu nhien n sao cho (2n+9) chia het cho (n+1)
Cau3:goi x la tong cac chu so cua so a =32010+2011, goi y la tong cac chu so cua so x va goi z la tong cac chu so cu y . tim z
cm trong 3 so x,y,z ton tai 1 so bang tong 2 so con lai biet
x.(y-z)^2+y.(x-z)^2+z.(x-y)^2-x^3-y^3-z^3+4xyz=0
cho tong A=(x+y+z)-(t+h)
trong do x,y,z,t,h la cac so nguyen khac nhau tu 1 den 2009.tim gia tri lon nhat va nho nhat
đẻ A max=>x+y+z max=>x+y+z=2009+2008+2007=6024
=>t+h min=>t+h=1+2=3
=>A max= 6024-3=6021
đê A min=>x+y+z min,t+h max=>x+y+z=1+2+3=6
t+h=2008+2009=4017
=>min A=6-4017=-4011
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CMR neu x,y,z la 3 so phan biet thi M co gia tri la so ngyen M=x^2/(x-y)(x-z) + y^2/(y-z)(y-x) + z^2/(z-x)(z-y)
tim x,y,z la so tu nhien x biet : (x+y) (y+z) (z+x)+10 =2017
=> (x+y).(y+z).(z+x)=2017-10
=> (x+y).(y+z).(z+x)=2007
=>
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