Question:
Solve for x, the inequalities in
$-5 \leq \frac{2-3 \mathrm{x}}{4} \leq 9$
Solution:
According to the question,
$-5 \leq \frac{2-3 x}{4} \leq 9$
Multiplying each term by 4, we get
⇒ -20 ≤ 2 – 3x ≤ 36
Adding -2 each term, we get
⇒ -22 ≤ -3x ≤ 34
Dividing each term by 3, we get
⇒ -22/3 ≤ -x ≤ 34/3
We know that,
Multiplication by -1 inverts the inequality.
So, multiplying each term by -1, we get
⇒ -34/3≤ x ≤ 22/3