Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Math practice test

Practice Question

Which expression is equivalent to (3a + 4ab - 7b) - (a + 2ab - 4b)?

Answer Choices

  • A: 2a + 2ab - 11b
  • B: 2a + 6ab - 11b
  • C: 2a + 2ab - 3b
  • D: 2a + 6ab - 35

Correct Answer: C

Rationale: Distribute the negative sign: (3a + 4ab - 7b) - (a + 2ab - 4b) = 3a + 4ab - 7b - a - 2ab + 4b. Combine like terms: (3a - a) + (4ab - 2ab) + (-7b + 4b) = 2a + 2ab - 3b. Thus, the correct answer is 2a + 2ab - 3b.

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