Fill in all the gaps, by selecting the Pull Down Box Arrow next to each gap. Select the correct answer.

Simplify the following equations. Please insert spaces between numbers and operators i.e. 1 + 1 = 21. 5x + 9 - 5 + 2 2. (2 * 4) x + 3 + 2 3. 2x + y + 5 - 3 4. x + (4 * 2) z