Question

Please help A mistake was made in the steps shown to simplify the expression. Which step includes the mistake?

Answer 1

Step 5 is incorrect

Explanation:

You dont have to solve this to figure it out.

Remember the Order of Operations:

1. Parenthesis

2. Exponents

3. Multiplication & Division

4. Addition & subtraction

You can see that in step 5, they added instead of divided.

It should have gone from 2 + 10 / 2 -----> 2+ 5. And then its a different final solution as well.

Hope this helps! If not, comment on it and let me know about my error. Have a great day!!

Answer 2

B.

Explanation:

Hello

step 5 is wrong

because 2 + 10/2

`2+(10)/(2)=(4)/(2)+(10)/(2)=(14)/(2)`

is different from (2+10)/2

`(2+10)/(2)=(12)/(2)`

as there is no parentheses you have the follow the correct priorities

division first, do 10/2=5 and then the addition 5 + 2 = 7

hope this helps