Subtract: (3g−4)−2(3g+4)

To subtract the expression \( (3g - 4) - 2(3g + 4) \), we'll begin by distributing the -2 across the second term:

1. Distribute -2: \[ (3g - 4) - 2(3g + 4) = (3g - 4) - (6g + 8) \]

2. Combine the expressions: \[ = 3g - 4 - 6g - 8 \]

3. Combine like terms:

   • Combine the \( g \) terms: \( 3g - 6g = -3g \)
   • Combine the constant terms: \( -4 - 8 = -12 \)

4. Write the final result: \[ -3g - 12 \]

So, the result of the subtraction is: \[ -3g - 12 \]