Simplify. Distribute 7 to all terms within the parenthesis
7(x) = 7x
7(-4) = -28
7x - 28 is your answer
hope this helps
I'm assuming you need to simplify the expression. If this is the case, you simply have to distribute the 7 to each of the terms in the parenthesis. So, you have
[tex] 7(x-4) = 7\cdot x - 7 \cdot 4 =7x-28 [/tex]