College Math CLEP Prep Practice Exam

To find the solution to an equation, we need to isolate the variable (in this case, x) on one side of the equation. In order to do this, we need to perform opposite operations to both sides of the equation. So, starting with the given equation 3x+2=15, we subtract 2 from both sides to get 3x=13. Then, we divide both sides by 3 to get x=13/3 or 4.33333. Option A, 3, is incorrect because it is just the coefficient of x and does not take into account the entire equation. Option C, 12, is incorrect because it appears to be the result of adding 3 and 2 together, rather than solving the equation. Option D, 17, is incorrect because it seems to be the result of adding 3 and 15 together.