I believe is like this
12 • (2x + 9) • (3 - x)
Step by step solution :
Step 1 :
Equation at the end of step 1 : (3 • (2x + 9) • 4) • (3 - x)
Step 2 :
Equation at the end of step 2 : 12 • (2x + 9) • (3 - x)
Step Three:
Final Result: 12 • (2x + 9) • (3 - x)