To solve the equation:

5/sin^x - 3/cos(3π/2 + x) - 2 = 0

First, let's simplify the expression.
Recall that cos(3π/2 + x) = -sin(x).

So, the equation becomes:
5/sin^x - 3/(-sin(x)) - 2 = 0
5/sin^x + 3/sin(x) - 2 = 0

Now, we can combine the fractions by finding a common denominator:

(5(sin(x)) + 3(sin^x) - 2(sin(x)sin^x)) / (sin(x)sin^x) = 0

Simplify further:

(5sin(x) + 3sin^x - 2sin(x)sin^x) / (sin(x)sin^x) = 0

Now we have a single fraction. We can now solve for sin(x) by setting the numerator equal to zero:

5sin(x) + 3sin^x - 2sin(x)*sin^x = 0

This is a transcendental equation and finding a specific solution can be difficult. One way to solve it would be to use numerical methods, such as graphing or using a computer program. Alternatively, you could approximate a solution by iteratively trying different values of sin(x) until you find an approximate solution that satisfies the equation.