27 and 90 can both be divided by 9
27 divided by 9 = 3
90 divided by 3= 10
so your answer is 3 over 10
I have no clue how to do that if u do no how to do other math can u help me I need alot of help
Answer: The answer is (D) 
Step-by-step explanation: Given that there is a rectangle, where length of the rectangle is given by

and width of the rectangle is given by

We are to find the perimeter of the rectangle. To do so, we need to add two times length with two times breadth of the rectangle.
Therefore, perimeter is given by

Thus, the correct option is (D).
13x-1
Is the answer, you have to get all you terms that being x+6+12x-7
6-7=-1
X+12x=13x
Put them together with the Xs first
13x-1
-5f, -8c, 40f, 10c happy math..ing