Practicing Success
If $-5 ≤ \frac{2-3x}{4} ≤ 9$, then x belongs to the interval |
(-∞, 22/3] [-34/3, 22/3] [22/3, ∞) (-∞, -34/3] |
[-34/3, 22/3] |
We have, $-5 ≤ \frac{2-3x}{4} ≤ 9$ $⇒-20≤2-3x≤36$ $⇒-22≤-3x≤34$ $⇒-34≤3x≤22$ $⇒-34≤3x≤22⇒-\frac{34}{3}≤x≤\frac{22}{3}⇒x∈[-34/3, 22/3]$ |