x-y=13
4-y=13
-y=9
y=
Type an integer or a simplified fraction.
y = -9
To find the value of y, we need to solve the equation step by step. Let's start with the given equations:
1) x - y = 13
2) 4 - y = 13
3) -y = 9
To solve equation 1), we need to isolate y. We can do this by subtracting x from both sides of the equation:
x - x - y = 13 - x
-y = 13 - x
Now, let's solve equation 2) for y by subtracting 4 from both sides:
4 - 4 - y = 13 - 4
-y = 9
Finally, let's rewrite equation 3) as -y = 9. Notice that equations 2) and 3) are the same. This means that the solution for y in equation 2) is also valid for equation 3).
So, the value of y is 9.