SAT/ACT problem of the week, January 26, 2017

Which of the following is equal to 5a + 3b -(5b -2) ?

  1. 5a (check answer)
  2. 5a - 2b +2 (check answer)
  3. 5a - 10b (check answer)
  4. 5a - 15b^2 - 6b (check answer)
  5. 8ab - 5b + 2 (check answer)

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