Final answer:
To evaluate 7m+(3m+5m), combine the like terms to get 15m.
Step-by-step explanation:
To evaluate the expression 7m+(3m+5m), we need to simplify the expression by combining like terms. In this case, the like terms are the ones with the same variable, which is 'm' in this case. The expression becomes 7m + 3m + 5m = (7 + 3 + 5)m = 15m. Therefore, the simplified expression is 15m.
Learn more about Evaluating expressions