If the length is six times the width than the width is equal to x. This would make the length 6x or 6 times x. The perimeter of the rectangle is all of the sides added together. So 6x+6x+x+x=14x
The perimeter equals 84 which gives you
14x=84
Divide by 14 on each side and x=6
The length is six times longer than the width which is 6x6 or 36 and the width would just remain 6.
Step-by-step explanation: If she bought x amount of posters and had 12 left after, you'd multiply 12 by 2 and get 24. Half of 24 is 12. So Micaela bought 24 posters.
