Rootless A — Dom7

3 – 5 – ♭7 – 9

Prove it — just do the practice exercise.
C7 Rootless A
E (3)G (5)Bb (♭7)D (9)
Rootless A for Dominant 7:

• 3 – 5 – ♭7 – 9

The tritone (3 → ♭7) is preserved — tension is fully present.

Example: C7 RL-A = E + G + Bb + D