Solve |2x − 1| = 7.
Answer and explanation
Correct answer: C. x = 4 or x = −3
- Step 1: Split into 2x − 1 = 7 and 2x − 1 = −7. Step 2. These give x = 4 and x = −3. Answer: x = 4 or x = −3. Why not the others: ignoring the negative case, swapping signs or dividing wrongly gives the other lists.
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