A student used the following steps to show that -3(x+4) - 5(x + 3) is equivalent to - 8x + 27: Step 1: -3x + 12 -5x + 15 - - Step 2: -3x + – 5x + 12 + 15 - Step 3: -8x + 27 The student made a mistake. In which step did the student first make a mistake, and what is a correct expression for that step?
