Answer:
c=b-d
------
a
Step-by-step explanation
a ( b − c ) = d Divide by a on both sides. a ( b − c ) a = d a b − c = d a Subtract b from both sides. b − b − c = d a − b − c = d a − b Reverse signs. ∴ c = − ( d a − b ) = b − d a
