tim x , y thuoc z ; x nhan y = 5 va x < y
tim x thuoc n biet : b,(149 nhan 35 : x + 5) nhan 17 =13 va d/(3 nhan x tru 3 ) binh phuong 3 =2 nhan 32 e/5 x+1-5x=500
tim x;y thuoc z biet y phan tru 2 bang x tru 2 nhan y phan x
2 nhan x phan 3 nhan y cong x bang1 phan y
tim cac so nguyen to x,y thoa man:(x -2) nhan (y-3)=-4
biet a=22 nhan 34 voi x,y thuoc N* va a co 9 uoc. Tim a
tim x y thuoc z biet x mu 2 cong y nhan x cong y mu 2 bang x mu hai nhan y mu hai
tim x,y thoa
a2 mũ x mũ 2 nhân 3 mụ ý bằng 12 mũ x
b(x+1) nhan (c,y-1) bang 3
bai 1:tinhnhanh:1998.1998-2000.1996
bai 2:tim x:
(3/4.x+2)/20-5
luu y:.la nhan
Tim x:
1 va 1/2 nhan x -(x+3) = 1/2
