N:=5 M:=45+N×10 N:=M/5×N-3

Let's break down the equations step by step.

1. Start with the initial value of \( N \): \[ N = 5 \]

2. Calculate \( M \) using the first equation: \[ M = 45 + N \times 10 \] Substituting the value of \( N \): \[ M = 45 + 5 \times 10 \] \[ M = 45 + 50 = 95 \]

3. Now, substitute \( M \) back into the equation for \( N \): \[ N = \frac{M}{5} \times N - 3 \] Substitute \( M = 95 \) and the original value of \( N = 5 \): \[ N = \frac{95}{5} \times 5 - 3 \] \[ N = 19 \times 5 - 3 \] \[ N = 95 - 3 = 92 \]

So, after performing all calculations, the final value of \( N \) is: \[ \boxed{92} \]