Make ‘a’ as the subject:
5a + 3b = 3a + 8b + 5
That means keep only
the variable ‘a’ on
one side of the equation. All other variables and constants must be moved to
the other side.
5a + 3b = 3a + 8b + 5
5a + 3b – 3a = 8b + 5
2a + 3b = 8b + 5
2a = 8b + 5 – 3b
2a = 5b + 5
a = (5b + 5) / 2
While moving variables/constants,
start with those furthest from variable ‘a’ than nearer to ‘a’.
