Các câu hỏi tương tự
Tim so nguyen a de so huu ti x=-101/x+7 la 1 so nguyen
1 tim cac so nguyen x,y biet x/7=6/21 -5/y=20/28 1/2=x/12 x/8=-28/32 3/y=12/24 3/4=15/y 2 viet 3 phan so bang phan so -10/15
cho so huu ti x=a-5/-7 cm x ko la so duong va cx ko phai la so am
cho 2 so huu ti x= 2a+7/5 va y = 3b-8/-5 voi gia tri nao cua a,b thi
a) x,y la so huu ti duong
b) x,y la so huu ti am
c) x,y khong la so huu ti am khong la so huu ti duong
ai tra loi nhanh ,dung mk tick cho
tim cac so x la so nguyen thooa man (x^2 +7x + 2) chia het cho x +7
bai 4: tim so huu ti X,Y biet:
\(|-x+2|-|x+7|=0^{ }\) b \(|2x-1|+|2+y|\ge0\)
\(\frac{x-3}{x+5}\)=\(\frac{5}{7}\)
\(\frac{1+3y}{12}=\frac{1+5y}{5x}=\frac{1+7y}{4x}\)
tim so huu ti x
1,tim ba so x,y,z.bt rang:
x/2=y/3,y/4=z/5(dau / la phan)
2,tim 2 so x,ybt:x:2=y:(-5) va x-y=7
nhanh thi tick
1)Tim x biet :3x-1/40-5x
2)3 lop 7A ,7B ,7C trong duoc tat ca 1020 cay.So cay lop 7B trong duoc bang 8/9 so cay lop 7A trong duoc.So cay lop 7C trong duoc bang 17/16 so cay lop 7B trong duoc.Hoi moi lop trong duoc bao nhieu cay ?
3)Tim x trong ti le thuc :
a,x-1/x+5=6/7
b,x^2/6=24/25
c,x-2/x-1=x-4/x-7(x khac 1,x khac -7)
d,7/x-1=x+1/9
Moi nguoi giup minh voi nhe minh xin cam on