X - y + x + y = 180
2x = 180
x = 90
2x - 2y = x + y
x = 3y
y = x/3
y = 90/3
y = 30
x - y = 90 - 30 = 60
x + y = 90 + 30 = 120
2x - 2y = 180 - 60 = 120
-5x(x+3)-7(x-3)/x^2-9= -5x^2-15x-7x+21/x^2-9= -5x^2-22x+21/x62-9
Solution
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: Write the given data

STEP 2: Find the mean

mean is 87.33
STEP 3: Find the median
Answer:
12
Step-by-step explanation:
192/16=12
square ?
although this statement doesn't make any sense.