3a + 4bc - d = 5a - 8j
Add d to both sides.
3a + 4bc = 5a - 8j + d
Subtract 4bc from each side.
3a = 5a - 8j + d - 4bc
Subtract 5a from both sides.
-2a = -8j + d - 4bc
Divide both sides by -2
a = [tex]\frac{(-8j -4bc + d)}{-2}[/tex]
A=2bc+-1/2d+4j would be your answer
