Let's break down the given expression step by step:

\[ 15.(4-7)-15.(5-3) \]
\[ [ 316 - (5^{2.4}+16)]:(-2)^3-10 \]

First, let's simplify the expression inside the parentheses and brackets.

### Simplifying \( 15.(4-7)-15.(5-3) \):

1. Calculate \( 4-7 \):
\[ 4 - 7 = -3 \]

2. Calculate \( 5-3 \):
\[ 5 - 3 = 2 \]

3. Substitute these values back into the expression:
\[ 15 \cdot (-3) - 15 \cdot 2 \]

4. Perform the multiplications:
\[ 15 \cdot (-3) = -45 \]
\[ 15 \cdot 2 = 30 \]

5. Subtract the results:
\[ -45 - 30 = -75 \]

So, \( 15.(4-7)-15.(5-3) = -75 \).

### Simplifying \( [ 316 - (5^{2.4}+16)]:(-2)^3-10 \):

1. Calculate \( 5^{2.4} \):
\[ 5^{2.4} \approx 52.734 \] (using a calculator for the exponentiation)

2. Add 16 to the result:
\[ 52.734 + 16 = 68.734 \]

3. Subtract this from 316:
\[ 316 - 68.734 = 247.266 \]

4. Calculate \( (-2)^3 \):
\[ (-2)^3 = -8 \]

5. Divide the result by \(-8\):
\[ 247.266 / (-8) \approx -30.90825 \]

6. Subtract 10 from the result:
\[ -30.90825 - 10 = -40.90825 \]

So, \( [ 316 - (5^{2.4}+16)]:(-2)^3-10 \approx -40.90825 \).

### Final Expression:

Combining both parts, we have:

\[ -75 \quad \text{and} \quad -40.90825 \]

These are the simplified results of the given expressions.