This equation will have infinitely many solutions when \( h = -5 \) because you get infinitely many solutions when you have the same number of \( x \)'s on either side of the equation and the constant terms are also equal.
To explain further:
Starting with the original equation:
\[ \frac{3}{2} x - 5 = \frac{3}{2} x + h \]
For the \( x \) terms to be equal on both sides, we see that both contain \( \frac{3}{2} x \). Therefore, for the equation to hold true for all \( x \), the constant terms must also be equal, that is:
\[ -5 = h \]
Thus, \( h \) must equal \(-5\) for the equation to have infinitely many solutions.