Solve 15+6-(9+2)•4 solve using the order of operation

Mathematics

2 answers:

Marizza181 [45]4 years ago

5 0

Answer:

=-23

Step-by-step explanation: This question it's going to be PEMDAS. p-parenthesis, e-exponents, m-multiply, d-divide, a-add, s-subtract. It can also go left to right. We start with (9+2) parenthesis and it give us equal to 11. To multiply and you must go left to right. This give us equal to 44, so add and subtract must go left to right. Now, to add left to right and equal to 21, and subtract this give us equal to -23.

Hope this helps!

natali 33 [55]4 years ago

4 0

According to BEDMAS/PEMDAS:
First we calculate the stuff in the bracket to get 15+6-11*4.
Then we multiply 11 and 4 to get 15+6-44.
Finally we just add and subtract left to right to get -23.

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Marina CMI [18]

Answer: C) The student made an error in step 3.

Step-by-step explanation:

When dividing by a negative while working with inequalities, you must "flip the sign." Thus, there is an error in step 3.

N.B. The answer could very well be interpreted as B), but I believe C) is the best and most defensible answer.

Hope it helps :) and let me know if you want me to elaborate.

8 0

3 years ago

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