The boxes at the top are labeled left to right, 1 to 4. Please use that in your answer.

How do you use the elimination method for this question? explain, because i really want to understand!

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18