Respuesta :

Answer:

9

Step-by-step explanation:

We have to solve in order to find out if Sam is correct

Remember PEDMAS:

For Multiplication, division and addition, subtraction, do what appears first left to right

Parenthesis

Exponent

Division

Multiplication

Addition

Subtraction

16 - 18 + (2+1)+2^3

Parenthesis first: 2+1 = 3

16 - 18 + 3 + 2^3

Exponent next: 2^3 = 8

Subtraction (it's on the left) : 16-18 = -2

Addition: -2 + 3 = 1

Addition : 1 + 8 = 9

Sam is not correct, the answer is 9, not 16.

Hope this helps :)

Have a great day!

amuratov

Answer:

18

Step-by-step explanation:

[tex]16-18:(2+1)+2^3[/tex]

We must use the BEDMAS rules (Brackets, Exponents, Division, Multiplication, Addition, Subtraction)

We must first calculate what's in the brackets:

[tex]2 + 1 = 3[/tex]

So the new expression is:

[tex]16-18:3+2^3[/tex]

Next, we calculate the exponent:

[tex]2^3 = 8[/tex]

So our expression is now:

[tex]16-18:3+8[/tex]

Next we divide:

[tex]18:3 = \frac{18}{3} = 6[/tex]

Our expression is now:

[tex]16 - 6 + 8[/tex]

Then we subtract:

[tex]16 - 6 = 10[/tex]

The new expression:

[tex]10 + 8[/tex]

And finally we add:

[tex]10 + 8 = 18[/tex]

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