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các bn lm đến đâu cx dc miễn là lm hộ mk cái ạ, ai đang lm vào nhắn tin vs mk để mk bít nha
a; \(-\dfrac{8}{3}+\dfrac{7}{5}-\dfrac{71}{15}< x< -\dfrac{13}{7}+\dfrac{19}{14}-\dfrac{7}{2}\)
-\(\dfrac{19}{15}\) - \(\dfrac{71}{15}\) < \(x\) < -\(\dfrac{1}{2}\) - \(\dfrac{7}{2}\)
-6 < \(x\) < -4
vì \(x\) \(\in\) Z nên \(x\) = -5
a) x = 23, 22, 21, 20,....
b) x = 14, 13, 12, 11, 10,...
a) \(M=\left\{20;21;22;23;24;25;26\right\}\)
b) \(N=\left\{1;2;3;4;5;6;7\right\}\)
c) \(P=\left\{47;48\right\}\)
_Chúc bạn học tốt_
\(a/M=\left\{20;21;23;24;25;26\right\}\)
\(b/N=\left\{1;2;3;4;5;6;7\right\}\)
\(c/P=\left\{47;48\right\}\)
a) x = (-6;-5;-4;-3;-2;-1;0;1;2;3;4;5)
b) x = (-3;-2;-1;0;1;2;3;4;5;6;7)
c) -7< x <7
Chúc bạn học tốt!
a.
\(-7\le x< 7\)
\(\Rightarrow x\in\left\{-7;-6;-5;-4;-3;-2;-1;0;1;2;3;4;5;6\right\}\)
\(\left(-7\right)+\left(-6\right)+\left(-5\right)+\left(-4\right)+\left(-3\right)+\left(-2\right)+\left(-1\right)+0+1+2+3+4+5+6\)
\(=\left(-7\right)+\left[\left(-6\right)+6\right]+\left[\left(-5\right)+5\right]+\left[\left(-4\right)+4\right]+\left[\left(-3\right)+3\right]+\left[\left(-2\right)+2\right]+\left[\left(-1\right)+1\right]+0\)
\(=-7\)
b.
\(-9< x\le6\)
\(\Rightarrow x\in\left\{-8;-7;-6;-5;-4;-3;-2;-1;0;1;2;3;4;5;6\right\}\)
\(\left(-8\right)+\left(-7\right)+\left(-6\right)+\left(-5\right)+\left(-4\right)+\left(-3\right)+\left(-2\right)+\left(-1\right)+0+1+2+3+4+5+6\)
\(=\left(-8\right)+\left(-7\right)+\left[\left(-6\right)+6\right]+\left[\left(-5\right)+5\right]+\left[\left(-4\right)+4\right]+\left[\left(-3\right)+3\right]+\left[\left(-2\right)+2\right]+\left[\left(-1\right)+1\right]+0\)
\(=-15\)
Chúc bạn học tốt
1) x\(\in\){-5;-4;-3;-2;-1;0;1;2;3}
2) x\(\in\){-10;-9;-8;-7;-6;-5;-4;-3;-2;-1;0;1;2;3;4;5;6;7;8;9}
3) x\(\in\) {-6;-5;-4;-3;-2;-1;0;1;2;3;4;5;6;7}
4) x\(\in\) {-11;-10;-9;-8;-7;-6;-5;-4;-3;-2;-1;0;1;2;3;4;5;6;7;8}
5) x\(\in\) {-9;-8;-7;-6;-5;-4;-3;-2;-1;0;1;2;3;4;5;6}
1, -6 < x < 4
=> x = { -5; -4; -3; -2; -1; 0; 1; 2; 3}
2, -11 < x < 10
=> x = { -10; -9; -8; -7; ....; 7 ; 8 ; 9}
3, -7 < x < 8
=> x = { -6; -5; -4; -3; -2; -1; 0; 1; 2; 3; 4; 5; 6; 7}
4, -12 < x < 9
=> x = { -11; -10; -9 ; ....; 5; 6; 7; 8}
5, -10 < x < 7
=> x = { -9; -8; -7; -6; .....; 5; 6}
đề câu c thiếu rồi
A,x thuộc{-3,-2,-1,0,1,2,3,4}
B,x thuộc{-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6}
câu c mk chịu