Complete the statement

a) (5x - y) = (5 -1) (x)
(2x + y) = ( ) (y)

To complete the statement, we need to find the missing value in the second equation.

Let's solve the first equation to find the value of (5 - 1):

Given:
(5x - y) = (5 - 1) (x)

To solve for (5 - 1), we first simplify the equation:
5x - y = 4x

Now, we can subtract 4x from both sides of the equation to isolate the variable on one side:
5x - 4x = y

Simplifying further:
x = y

Therefore, (5 - 1) is equal to x.

Now, let's use this information to find the missing value in the second equation.

Given:
(2x + y) = ( ) (y)

We know that x = y from the first equation. So we can substitute that value into the second equation:

(2x + y) = (2y) (y)

Now, the missing value in the second equation is 2y.

Therefore, the complete statement is:
(5x - y) = (5 - 1) (x)
(2x + y) = (2y) (y)