35) \( 5 m n-10+2 m-25 n \)

To simplify the expression \( 5mn - 10 + 2m - 25n \), first, we can combine like terms. Rearranging gives us: \( 5mn + 2m - 25n - 10 \). Next, we can write it in a more structured way: \( 5mn + 2m - 25n - 10 = 2m + 5mn - 25n - 10\). This can help in assessing relationships between variables and making factorization easy if needed! Now, if any substitutive values for \(m\) or \(n\) are known, you could replace them and evaluate this expression! It's always a good practice to define and clarify variables to solidify understanding.