Solve for one of the variables in the first equation (in this case, I will solve for X):
X = Y + 3
Then use that value of X in the second equation to solve for Y:
X + 3Y = 9
(Y + 3) + 3Y = 9
4Y + 3 = 9
4Y = 6
Y = 1.5
Use the value of Y we just found in the X equation we created:
X = Y + 3
X = 1.5 + 3
X = 4.5
Therefore X = 4.5 or 9/2 and Y = 1.5 or 3/2.
Our answer is

Our greatest common factor, or GCF, is

, so when we factor is out, our divide each term by

, we get our answer. To check this, we can multiply the

back across the parenthesis and see if we get the same result as our initial question.
Hope this helped! :))
Least to greatest
0.3722, 0.38, 0.3886
2/3 of 300 is 200.
200 +40 = 240.
the total amount of seats minus the amount filled
300 - 240 = 60
That means that there are 60 seats remaining.