Simplify the expression:

15-3[2+6(-3)]
I need a summer help on how to figure this out please.
Thank you

Study this page about the order of operations.

http://www.mathsisfun.com/operation-order-pemdas.html

I'll be glad to check your answer.

-288?

15-3[2+6(-3)]

15 - 3(-16)

15 + 48 = 63

To simplify the expression 15 - 3[2 + 6(-3)], we need to follow the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders, Multiplication/Division, and Addition/Subtraction.

Let's break it down step by step:

Step 1: Start by simplifying the expression inside the parentheses/brackets.
In this case, we have 2 + 6(-3). Multiply 6 by -3 first:
2 + 6(-3) = 2 + (-18)

Step 2: Perform the addition inside the parentheses/brackets:
2 + (-18) = -16

Step 3: Now, substitute the simplified expression back into the original expression:
15 - 3[-16]

Step 4: Perform the multiplication: multiply 3 by -16:
15 - 3[-16] = 15 - (-48)

Step 5: Simplify the subtraction by changing the sign of the negative number:
15 - (-48) = 15 + 48

Step 6: Finally, perform the addition:
15 + 48 = 63

Therefore, the simplified expression 15 - 3[2 + 6(-3)] equals 63.