1. **Problem 1:** Simplify the expression $$-1.5(2m - 4) + 0.5(6m + 2)$$
2. Use the distributive property: $$a(b + c) = ab + ac$$
3. Distribute $$-1.5$$ and $$0.5$$:
$$-1.5 \times 2m = -3m$$
$$-1.5 \times (-4) = +6$$
$$0.5 \times 6m = 3m$$
$$0.5 \times 2 = 1$$
4. Substitute back:
$$-3m + 6 + 3m + 1$$
5. Combine like terms:
$$-3m + 3m = \cancel{-3m} + \cancel{3m} = 0$$
$$6 + 1 = 7$$
6. Final simplified expression for problem 1 is $$7$$.
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7. **Problem 2:** Simplify the expression $$5(x + 2) - 3x$$
8. Use distributive property:
$$5 \times x = 5x$$
$$5 \times 2 = 10$$
9. Substitute back:
$$5x + 10 - 3x$$
10. Combine like terms:
$$5x - 3x = 2x$$
11. Final simplified expression for problem 2 is $$2x + 10$$.
**Answers:**
- Problem 1: d. 7
- Problem 2: None of the given options (a. 8x + 2 is incorrect; correct is $$2x + 10$$)
Expression Simplify E3125C
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