Question

evaluate the expression when c = -7 and y = 2. y - 2c

Explanation:

Step1: Substitute the values of c and y

We know that \( c = -7 \) and \( y = 2 \). Substitute these values into the expression \( y - 2c \). So we get \( 2-2\times(-7) \).

Step2: Perform the multiplication

First, calculate \( 2\times(-7) \). The product of a positive number and a negative number is negative, so \( 2\times(-7)= - 14 \). Now the expression becomes \( 2-(-14) \).

Step3: Simplify the subtraction of a negative number

Subtracting a negative number is the same as adding its positive counterpart. So \( 2 - (-14)=2 + 14 \).

Step4: Perform the addition

\( 2+14 = 16 \).

Answer:

\( 16 \)