Question

If ab = c - d, which of the following is an expression for d in terms of a, b, and c?

Answer 1

ANSWER

$d = - ab + c$


EXPLANATION


The given expression is

$ab = c - d$

To find an expression for d in terms of a, b, and c, means we want to make d the subject of the relation.


This means that, we need to isolate d on one side of the equation while all other terms are on the other side.



We subtract from both sides of the equation to obtain,


$ab - c = - d$



We now divide through by -1, to get,



$- ab + c = d$


Or


$d = - ab + c$


The topic is change of subject