Final answer:
To add the expression (4d-3) + (12d+4), combine like terms. The simplified expression is 16d + 1.
Step-by-step explanation:
To add the expression (4d-3) + (12d+4), we combine like terms. Adding the coefficients of d, we get 4d + 12d = 16d. Then, adding the constants, we get -3 + 4 = 1. Therefore, (4d-3) + (12d+4) simplifies to 16d + 1.
Learn more about Simplifying expressions with addition