Final answer:
To simplify the expression 6m + 4 - 12m + 5 - 3m, combine the like terms to get -9m + 9. The correct answer is 9m + 9.
Step-by-step explanation:
To simplify the expression 6m + 4 - 12m + 5 - 3m, we first combine the like terms. Like terms have the same variable(s) raised to the same exponent(s). In this case, the like terms are the terms with 'm' as the variable. Combining the like terms, we get:
6m - 12m - 3m + 4 + 5 = (6 - 12 - 3)m + 4 + 5 = -9m + 9
Therefore, the simplified expression is -9m + 9. The correct answer is Option B) 9m + 9.