\(\Rightarrow x\in\left\{...;-3;-2;-1;0;1;2;3;...\right\}\)
25-(30+X)
TỨC 25-30-x
Suy ra 25-30-x
=25+(-30)-x
=-(30-25)-x
=-5-x
suy ra x={...-3;-2;-1;0;1;2;3;...}
Vậy x = { ...-3;-2;-1;0;1;2;3;... }
tim so nguyen x biet;
| x+9 |.2=10
tim so nguyen x,biet:
-3/4<x/6<-1/2
a, tim tat ca cac so nguyen to p sao cho p+11 cung la so nguyen to
b,tim tat ca cac so nguyen to p de p+8,p+10 cung la cac so nguyen to
tim so x biet 25% so x cong voi 50% so x thi duoc 45
Tim tap hop cac so nguyen x sao cho
A, |2x - 4| + 2x - 4 = 0
B , |x + 5|- ( x +5) = 0
C, 2 - x = - |2- x|
tim cac so tu nhien x , biet :
a, x thuoc U(18) va x thuoc B(4)
b, x thuoc U(36) va x > hoac = 12
c, x thuoc B(12) VA 30 < HOAC = X < HOAC = 100
d, x thuoc U(28) va x thuoc U (21)
Tim cac so nguyen x sao cho:
a)Ix+2I+Iy+5I=0
b)IIyI+Ix+2II+IxI=0
tim tat ca cac so nguyen n sao cho ( 2n + 3 )/ 7 la so nguyen
tim cac so nguyen duong thoa man \(x^2\)+ \(y^3\)+ \(^{z^4}\)=90
