Các câu hỏi tương tự
Tim x,y thuoc Z biet
a}[x-3].[2y+1]=7
b}[2x+1].[3y-2]=-55
Tim x,y biet
a)(2x +1)(3y-2)=55
b)(x+1)(xy-1)=3
tim x,y,z thuoc Z biet /2x-4/+/y+2/+/2x+3y-z/=0
Tim x,y,z biet:
a) x/3 = y/-4 = z/-5 va 2x + 3y - 4z = 70
b) x/3 = y/2; x/5 = 2/7 va x+y+z = 184
c) x/5 = y/-7 ; y/4 = z/15 va x+3y-4z=18
d) 2x/3 = 3y/4 = 4z/5 va x+y+z=49
e) x/y = 3/7 va x.y = 84
Help me, pleass!!
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tim x,y E Z biet
2y - 3x + 3y = 16
Bai 1.Tim x, y biet :
2x(3y-2)+(3y-2) = -55
Bai 2 .a) So sanh : -22/45 va -51/103
b) So sanh A = 2009^2009 +1 / 2009^2010 va B = 2009^2010-2/2009^2011-2
Bai 3 :
a)Tim so tu nhien co 3 chu so , biet rang khi chia so do cho cac so 25, 28,35thi duoc cac so du lan luot la 5,8,15
b)Tim x: (x+1)+(x+2)+(x+3)+...+(x+100)=205550
a x(x+3)=0
b (x+2)(7-x)>0
c (x^2+1)(49-x^2)=0
d (2x-1)(4y-2)=-42
e (2x+1)(3y-2)=-55
f xy-2x-3y=5
Tìm x,y thuôc Z
(2x-1)(3y-2)=27 tim x y biet x y thuoc n
Tìm x, y thuộc Z biết (2x + 1)(3y - 2) = -55