Question

BT1: Tìm số nguyên x, biết:

1) \(-3+\dfrac{1}{2}< x< \dfrac{7}{2}+\dfrac{1}{3}\)

Answer 1

1) \(-3+\dfrac{1}{2}< x< \dfrac{7}{2}+\dfrac{1}{3}\)

\(\Rightarrow-\dfrac{5}{2}< x< \dfrac{23}{6}\)

\(\Rightarrow-2,5< x< 3,8\left(3\right)\)

Mà x là số nguyên nên:

\(x\in\left\{-2;-1;0;1;2;3\right\}\)

Answer 2

\(-3+\dfrac{1}{2}< x< \dfrac{7}{2}+\dfrac{1}{3}\)

\(\Rightarrow-2\dfrac{1}{2}< x< 3\dfrac{5}{6}\)

Vì \(x\in Z\) nên \(x\in\left\{-2;-1;0;1;2;3\right\}\)

Vậy...............

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