. What is the simplified form of the following expression?

–(7x – 4y)

-7x + 4y

To simplify the expression –(7x – 4y), we need to distribute the negative sign to both terms inside the parentheses.

This is done by multiplying each term inside the parentheses by -1:

-1 * 7x = -7x
-1 * -4y = 4y

Therefore, the simplified form of the expression –(7x – 4y) is -7x + 4y.