15) Given that F F=32+9 c make c the subject of the formula

To make \( c \) the subject of the formula \( F F = 32 + 9c \), we need to isolate \( c \) on one side of the equation. Here are the steps:<br /><br />1. Start with the given equation:<br /> \[<br /> F F = 32 + 9c<br /> \]<br /><br />2. Subtract 32 from both sides to move the constant term to the left side:<br /> \[<br /> F F - 32 = 9c<br /> \]<br /><br />3. Divide both sides by 9 to solve for \( c \):<br /> \[<br /> c = \frac{F F - 32}{9}<br /> \]<br /><br />So, the formula with \( c \) as the subject is:<br />\[<br />c = \frac{F F - 32}{9}<br />\]