Eighth note is half of a quarter note, a quarter of a half note and an eighth of a whole note.
Equations are: 4x + 2y = 6
x - y = 3
Multiply 2nd equation by 2,
2x - 2y = 6
Add both the equations,
6x = 12
x = 12/6
x = 2
In short, Your Answer would be 2
Hope this helps!
ANSWER

EXPLANATION
The given logarithmic expression is

We take antilogarithms to obtain:

This simplifies to give us

Or
