Question

Determine the value of the expression −4(21−3−6)−2(–7) .

Answer 1

To determine the value of the expression −4(21−3−6)−2(–7), we need to follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).

First, let's simplify the expression inside the parentheses:

21 - 3 - 6 = 18 - 6 = 12

Now we can substitute this value back into the original expression:

−4(12)−2(–7)

Next, we perform the multiplication:

−4 * 12 = -48

-2 * (-7) = 14

Substituting these values back into the expression:

-48 - 14

Finally, we perform the subtraction:

-48 - 14 = -62

Therefore, the value of the expression −4(21−3−6)−2(–7) is -62.

Explanation: