-8+|x|=-12
|x|=-12+8
|x|=-4 mà |x|>=0(với mọi x)
nên \(x\in\phi\)
-8+|x|=-12
|x|=-12+8
|x|=-4 mà |x|>=0(với mọi x)
nên \(x\in\phi\)
tim cac so nguyen x,y,z biet :-6/12=x/8=-7/y=z/-18
tim so nguyen x biet:
a, 23-x=19-(-12)
b, x-7=(-2)-8
tim x dua vao quan he uoc boi:
tim so tu nhien x sao cho x-1 la uoc cua 12
tim so tu nhien x sao cho 2x+1 la uoc cua 28
tim so tu nhien x sao cho x+15 la boi cua x+3
tim cac so nguyen x,y sao cho (x+1)(y-2)=3
tim so nguyen x sao cho(x+2).(y-1)=2
tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180
tim so nguyen to x,y biet x+y=12 va UCLL (x:y)=5
tim so tu nhien x,y biet x+y=32 va UCLL (x:y)=8
tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100<x<150
tim so x nho nhat khac 0b biet x chia het cho 24 va 30
40 chia het cho x . 56 chia het cho x va x>6
tim so nguyen x biet x=12+43
a, Tim so tu nhien x, y biet rang 4<9/x<12/y<18
b, Tim so nguyen x, y biet rang x/2 - 2/y = 1/2
Tim so nguyen x biet :
-12 (x - 5 ) + 7(3 - x )
tim so nguyen x biet: (-12)^2.x=56+10.38.x
vay x la
tim so nguyen x, biet
a. 7 - x = 8 - ( -7 )
b. x - 8 = ( -3 ) = -8
tim so nguyen a, biet
a. gia tri tuyet doi a gia tri tuyet doi = 2
b. gia tri tuyet doi a + 2 gia tri tuyet doi = 0
tim so nguyen x,y,z biet: -4/8=x/-10=-7/y=z/-24