17-4x-21+9x+x

1 answer

To simplify the expression \( 17 - 4x - 21 + 9x + x \), we can combine like terms. Let's break it down:

  1. Combine the constant terms:
    \( 17 - 21 = -4 \)

  2. Combine the \(x\) terms:
    \( -4x + 9x + x = (-4 + 9 + 1)x = 6x \)

Now, putting it all together:
\[ -4 + 6x \]

So the simplified expression is:
\[ 6x - 4 \]