Question

find d:
7(d - 3) = 21
a d=3
b d=6
c d=24

Explanation:

Step1: Divide both sides by 7

To isolate the term with \( d \), divide both sides of the equation \( 7(d - 3)=21 \) by 7.
\( \frac{7(d - 3)}{7}=\frac{21}{7} \)
Simplifying, we get \( d - 3 = 3 \).

Step2: Add 3 to both sides

To solve for \( d \), add 3 to both sides of the equation \( d - 3 = 3 \).
\( d - 3 + 3 = 3 + 3 \)
Simplifying, we get \( d = 6 \).

Answer:

B. \( d = 6 \)