To make \( d \) the subject of the equation \( c = 7d \), we need to isolate \( d \) on one side of the equation. This can be done by dividing both sides of the equation by 7.
Step 1: Isolate \( d \) in the Equation
To make \( d \) the subject of the equation \( c = 7d \), divide both sides by 7: