Your answer would be 1, or 72+25.
What is happening in this case is a negative number is being subtracted from a positive. This means you are taking away a negative. The two negatives cancel each other out, and then it becomes you are adding a positive.
Another way I like to think about this is the two minus symbols combine together to form a plus sign.
Hope this helped!
5x/4 plug in any number by x
404,991
PEMDAS
Multiplication comes before subtraction
900x450=405,000
405,000-9=404,991
Answer:
so it is a rectangle with a perimeter of 30 units
