What the qoutient sweetheart
The perimeter is twice the sum of the length and the width:

The area is the product of the dimensions:

So, the system is

The numbers would be 1 and 6 you need to put the positive on the 6 and the negative on the 1 to get positive 5 when adding and -6 when multiplying
Hope this helps
57.4/10=5.74
the answer is 5.74