The expression equivalent to 3(5 + 6) is 15 + 18 since both simplify to 33 and the correct option is C.
The expression 3(5 + 6) involves performing the operation within the parentheses first, then multiplying the result by 3.
Following the order of operations (PEMDAS/BODMAS), start with the addition within the parentheses:
5 + 6 = 11
Now multiply the result by 3:
Thus, the expression 3(5 + 6) simplifies to 33. Among the options provided:
8 + 9 = 17
8 + 6 = 14
15 + 18 = 33
15 + 6 = 21
Among these, the expression equivalent to 3(5 + 6) is (15 + 18), which equals 33. Therefore, the correct answer is: "15 + 18." This confirms the equivalence to the simplified expression obtained earlier, which is 3(5 + 6) = 33.
So, the correct option is C.
Question:
Which expression is equivalent to 3(5 + 6)?
A. 8 + 9
B. 8 + 6
C. 15 + 18
D. 15 + 6