By making c the subject of formula in the given equation, the value "c" is equal to c = (B - ad - r)/3.
<h3>What is an equation?</h3>
An equation can be defined as a mathematical expression which shows that two (2) or more thing are equal.
In this exercise, you're required to solve for c from the given mathematical expression (equation) by making it the subject of formula. This ultimately implies that, all the other variables would be defined in terms of c and they would all be on the same side of the "equal to" symbol.
Making c the subject of formula, we have:
B - ad = 3c + r
3c = B - ad - r
Dividing both sides by 3, we have:
3c/3 = (B - ad - r)/3
c = (B - ad - r)/3.
Read more on subject of formula here: brainly.com/question/21140562
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