Subjects algebra

Absolute Value Inequality 9E8Bac

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1. **State the problem:** Solve the inequality \(\left|\frac{1}{2}w - \frac{3}{4}\right| < 2\). 2. **Recall the rule for absolute value inequalities:** If \(|A| < b\), then \(-b < A < b\). 3. **Apply the rule:** \[-2 < \frac{1}{2}w - \frac{3}{4} < 2\] 4. **Add \(\frac{3}{4}\) to all parts to isolate the term with \(w\):** \[-2 + \frac{3}{4} < \frac{1}{2}w < 2 + \frac{3}{4}\] Convert \(-2\) and \(2\) to quarters: \[-\frac{8}{4} + \frac{3}{4} < \frac{1}{2}w < \frac{8}{4} + \frac{3}{4}\] Simplify: \[-\frac{5}{4} < \frac{1}{2}w < \frac{11}{4}\] 5. **Multiply all parts by 2 to solve for \(w\):** $$2 \times \left(-\frac{5}{4}\right) < 2 \times \frac{1}{2}w < 2 \times \frac{11}{4}$$ Intermediate step showing cancellation: $$\cancel{2} \times \left(-\frac{5}{4}\right) < \cancel{2} \times \frac{1}{2}w < \cancel{2} \times \frac{11}{4}$$ Simplify: $$-\frac{10}{4} < w < \frac{22}{4}$$ Simplify fractions: $$-\frac{5}{2} < w < \frac{11}{2}$$ 6. **Final answer:** \[-\frac{5}{2} < w < \frac{11}{2}\] 7. **Interval notation:** \(\left(-\frac{5}{2}, \frac{11}{2}\right)\) 8. **Decimal form:** \(-2.5 < w < 5.5\)