To simplify the expression \( 17 - 4x - 21 + 9x + x \), we can combine like terms. Let's break it down:
-
Combine the constant terms:
\( 17 - 21 = -4 \) -
Combine the \(x\) terms:
\( -4x + 9x + x = (-4 + 9 + 1)x = 6x \)
Now, putting it all together:
\[
-4 + 6x
\]
So the simplified expression is:
\[
6x - 4
\]