okay so you would do it like this
2x + (3 - x)
2x + 3 - x
x + 3
the answer would be x + 3
hope this helps!
Following PEMDAS, the parentheses comes first. Essentially, (3 - x) is times 1, which removes the parentheses. So 2x + 3 - x. Subtract the x first. This leaves x + 3.
