The perimeter of a rectangle is 54 meters.The longer side is three more than the shorter side.Find the length of each side.Please explain?

This is technically algebra. SO LETS DO THIS!!!!

We have to make an unknown and find it. Lets make x into this unknown and the shorter side into x. If the longer side is 3 more than the shorter side, that means that the longer side is equal to x+3 because you have the shorter side and you have to add 3 more to it to get the longer side. Now that you know what all sides are( x, x, x+3, and x+3) we can now solve.

Since the perimeter of a rectangle is 54 meters and perimeter is the length of the sides put together, we simply have to add all the sides together. If we do this, we get x+x+x+3+x+3=54. To put it shorter, combind the x's and the 3's. Now it becomes 4x+6=54. Minus 6 from both sides, and you get 4x=48. Divide 4 from both sides, and you see that x=12. I hope I explained the question enough, and have a nice day.