The length of a rectangle is 5 less than twice its width. The perimeter is 26 meters. How do you find the dimensions of the rectangle?
Width is 6 meters and length is 7 meters.
Let width be
We also know that the perimeter of the rectangle is 26 meters. The perimeter is the sum of all sides: 2 widths + 2 lengths.
We now have two equations which we can solve simultaneously. Substitute
Now that we have a value for
There are other methods you can use to solve simultaneous equations.
Hope this helps :)