Final answer:
To solve the equation 8(x+2)=8(x+4)-?, the missing number for infinitely many solutions is 16.
Step-by-step explanation:
To solve the equation 8(x+2)=8(x+4)-?, we can start by expanding the equation:
8x + 16 = 8x + 32 - ?
Next, we can simplify the equation by subtracting 8x from both sides:
16 = 32 - ?
Finally, we can solve for ? by subtracting 32 from both sides:
? = 32 - 16
Therefore, the missing number for infinitely many solutions is 16.