To find the value of X, we can first add 9/4 to both sides of the equation:
X - 9/4 + 9/4 = -3/8 + 9/4
Simplifying,
X = (9/4 - 3/8)
To find a common denominator, we multiply the numerator and denominator of 3/8 by 2:
X = (9/4 - (3/8) * (2/2))
X = (9/4 - 6/8)
Now, we can subtract these fractions:
X = (9/4 - 6/8) = (18/8 - 6/8)
X = 12/8
Simplifying the fraction,
X = 3/2
Therefore, X = 3/2, or 1.5.