Simplify the expression 13 - 2(x + 4)

Question

I'm really stuck , i don't really understand prombles like this , also a little advice would be nice .

Answer 1

Simplify the expression 13 - 2(x + 4)

I'm really stuck , i don't really understand prombles like this , also a little advice would be nice .

Follow the order in the acronym PEMDAS...

Parenthesis

Exponents

Multiply (also distribute)

Divide

Add

Subtract

In order:

Since you cant do anything inside he parenthesis (x + 4)

No exponents

Distribute the -2 to multiply -2(x+4) = - 2x - 8

No division

Add and Subtract to finish

-13 - 2x - 8 = -21 - 2x

Answer: -2x - 21