12. Let's set up an equation using w to represent the weekly allowance. w/2 + 10 = 18 Then solve: Subtract 10 from both sides w/2 = 8 Multiply by two on both sides w = 16 The answer is 16.
13. Let's set up another equation using c to represent the original number of candy. (c - 3) ÷ 5 = 3 Solve: Multiply by 5 on both sides c - 3 = 15 Add three on both sides c = 18 The answer is 18
Hope this helped! If you have any more questions or don't understand, please comment or DM me. :)