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.