1. **State the problem:** Calculate the value of the expression $(5 \times 4) + (3 \times 4) - (4 \times 3)$.\n\n2. **Recall the order of operations:** Multiplication and division are performed before addition and subtraction.\n\n3. **Calculate each multiplication:**\n- $5 \times 4 = 20$\n- $3 \times 4 = 12$\n- $4 \times 3 = 12$\n\n4. **Substitute these values back into the expression:**\n$$20 + 12 - 12$$\n\n5. **Perform addition and subtraction from left to right:**\n- $20 + 12 = 32$\n- $32 - 12 = 20$\n\n**Final answer:** $20$