Let's simplify the expression step by step. We will combine like terms.
The given expression is: \[ -4x - 6 - 7y + 2 - 6x - 4 + 4y \]
First, let's group the like terms:
- For x terms: \(-4x - 6x\)
- For y terms: \(-7y + 4y\)
- For constant terms: \(-6 + 2 - 4\)
Now, simplify each group:
-
For x terms: \[ -4x - 6x = -10x \]
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For y terms: \[ -7y + 4y = -3y \]
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For constant terms: \[ -6 + 2 - 4 = -8 \]
Now, we can combine these results: \[ -10x - 3y - 8 \]
Thus, the simplified expression is: \[ \boxed{-10x - 3y - 8} \]