Actually, I didn’t understand what happened here. I’ll be glad if someone can explain me in simpler words.
So far, we have talked about finding the relative minor of a major. As we have discovered, this is actually fairly easy to do. Obviously, however, this is only half the picture. What if you are asked to write or play something in a minor key? Clearly, there is an important relationship between the minor and its relative major - it's the major scale that we draw our notes from. So, what if someone asks you to play A minor.
The first thing we need to do is to work out the relative major. Well, the tonic of the relative major is a minor 3rd above the tonic of the minor. So, in this case, we know the minor tonic is A so we count up 3 notes from A. This gives us:
1=A - 2=B - 3=C
Next, we have to check if this is a minor 3rd. Remember, a minor 3rd is an interval of 3 semitones.
1 = A-A# - 2 = A#-B - 3=B-C
So, C is a minor 3rd above A - so C is the relative major of A minor. You should spend some time working out the pairs of related majors and minors and try to become familiar with them.