First move the (Y) to the other side of the equal sign,

Then subtract add (15) on both sides

Since a variable can't be negative just divide by (-1) on both sides,

The answer would be,

Hope this helped
:D
Answer:
(8,-2)
Step-by-step explanation:
x and y switch places and x's sign is changed
Answer:
There is 5 numbers (not including the sum/25)
The average is add up all the numbers and divide by amount of numbers
25/5=5
The average value is 5
Step-by-step explanation:
-19 is the answer ////////////////// sorry i needed more charecters to answer