College Math CLEP Prep Practice Exam

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What is the simplified form of the expression (5x + 6) + (2x - 10)?

  1. 7x + 16

  2. 7x + 10

  3. 7x - 10

  4. 7x - 4

The correct answer is: 7x + 10

To simplify this expression, we need to combine like terms. In this expression, (5x + 6) and (2x - 10) are like terms because they both contain the variable x. To combine these terms, we simply add the coefficients of the x terms. So 5x + 2x = 7x. Then we add the constants, 6 + (-10) = -4. Therefore, the simplified form is 7x - 4, which is option D. Option A, 7x + 16, is incorrect because the constant terms, 6 and -10, were not correctly combined. Option C, 7x - 10, is incorrect because the constant terms, 6 and -10, were not correctly combined. Option D, 7x - 4, is the correct choice

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