Answer:

Explanation:
Given expression,
→ (m - 3 + 4n)(-8)
Let's simplify the expression,
→ (m - 3 + 4n)(-8)
→ (-8 × m) + (-8 × -3) + (-8 × 4n)
→ -8(m) - 8(-3) -8(4n)
→ -8m - (-24) - 32n
→ -8m + 24 - 32n
→ -8m - 32n + 24
Thus, answer is -8m - 32n + 24.