Answer:
-57
Step-by-step explanation:
To solve this problem, you need to use the acronym PEMDAS.
P = parenthesis (if there is any in the expression) or brackets
E = exponents (if there is any in the expression)
D/M = Divide or Multiply or both
A/S = Add or Subtract or both
In the problem, you need to simplify the parentheses ( ) inside the brackets first. For example: -3 [1 + 2<u>(4 + 5)</u>]. That will equal to -3 [1 + 2<u>(9)</u>]. Next, you can solve the brackets now. Since there is both a addition and multiplication problem inside these brackets, you must do the multiplying first. For example,
-3 [1 + <u>2(9)</u>]. That equals to -3 [ 1 + 18}. Next, do the addition inside of the brackets and then multiply that answer to -3. For example, -3 [<u>1 + 18</u>}. That equals to -3 [19]. Do the multiplication by a calculator or by hand. if you are doing by hand, ignore the signs of the numbers until the very end.
If doing by hand, first you need to multiply 9 by the 3 to get 27. Keep the 7 and borrow a 2 on top of the ones places which is 1. Multiply the 1 by the 3 which gets 3 and add 2 to the 3 to get 5. You got the 2 from multiplying 9 by 3 which is 27. Since the 3 in this problem is negative, that will leave your answer with a negative number. Since a negative times a postive will always be negative. If the number of negatives is odd in the problem, then it will a negative answer. If the number of negatives is even, the answer will be positive. Same thing applies to division. You get -57 as your answer.
19
<u>× 3</u>
