You multiply both sides by 9 first so you have -45=y-7. then add 7 to both sides to get y=-38
53x12=636 that is your answer that is the way to estimate it your answer is 636 that is how many students can be seated
Answer:
3 large doors
Step-by-step explanation:
Given

Represent small door with S and large with L

From the question, we understand that;

So, we have that


Required
Determine the number of Large doors that can be cut from the board
To do this, we simply divide the size of the board by the size of the large cabinet
i.e.


Convert feet to inches



Get the integer part of the decimal

Hence:
3 large doors can be gotten from the board
20 and 45x
We look for a number that can go into both numbers.
5 into 20 is 4 and 5 into 45x is 9x.
5: 20 45x
4 9x
So no other number can go into 4 and 9x again.
So the GCF of 20 and 45x is 5.
Hope this explains it.
90 degrees
the diagonals intersect at right angles