Question

Simplify 18 - 2[x + (x - 5)].

8 - 4x
28 - 4x
28 - 2x

Answer 1

Hello,

Please, ask future math questions in \(\large\sf\color{blue}{\underline{\href{ /study#/groups/Mathematics}{½~~ Mathematics ~~½}}}\)



The question is: "Simplify 18 - 2[x + (x - 5)]."

Start from the inside out. Remove the parenthesis.

18 - 2[x + x - 5]
18 - 2 + 2x - 5(Upon adding x + x)
16 + 2x - 5 (Upon subtracting 2 from 15)

Now, there is one final step. Can you guess what it is?