\(a-b=2a+2b\Rightarrow-a=3b\Rightarrow a=-3b\Rightarrow\frac{a}{b}=-3\)
=>\(a-b=-3\left(1\right);2\left(a+b\right)=-3\Rightarrow a+b=\frac{-3}{2}\left(2\right)\)
Từ (1) và (2) => \(a-b+a+b=-3+\frac{-3}{2}\Rightarrow2a=\frac{-9}{2}\Rightarrow a=\frac{-9}{4}\Rightarrow b=\frac{3}{4}\)
Vậy ................
tim a, b la 2 so huu ti sao cho a+b=a/b=a*b va b khac 0
tim 2 so huu ti a va b: a+b=a*b=a/b
tim so huu ti a va b
a- b = a/b=2(a+b)
Goi A la so huu ti am nho nhat viet bang ba chu so 1 , B la so huu ti am lon nhat viet bang ba chu so 1.Tim ti so cua A va B
cho a,b la 2 so huu ti duong. So sanh a/b va a+2/b+2. C
TIM HAI SO HUU TI SAO CHO
a+b =ab =a/b
Cho a,b là 2 so huu ti duong
so sanh a/b va a+2/b+2. Cho vd cu the
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 so huu ti a;b;c
biet a*b=2;b*c=3;a*c=54
