Solve for x in the linear equation: 3(2x - 5) - 4(x + 2) = 7.
Answer and explanation
Correct answer: A. 15
- Step 1: Expand brackets: 6x - 15 - 4x - 8 = 7.
- Step 2: Combine like terms: 2x - 23 = 7, giving 2x = 30, so x = 15.
Answer
15.
Why not the others: Option 11 results from forgetting to distribute -4 to +2; Option 6 comes from miscalculating 2x = 12. Option 9 does not fit.
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