Question: 5/6 \times 2/1 = 10/6 or 4/6 \div 2 = 1 2/3
1. **State the problem:** We are given two expressions to evaluate and compare: $$\frac{5}{6} \times \frac{2}{1}$$ and $$\frac{4}{6} \div 2$$, and we want to understand how $$\frac{4}{6} \div 2$$ equals the mixed number $$1 \frac{2}{3}$$.
2. **Multiplication of fractions:** The formula for multiplying fractions is $$\frac{a}{b} \times \frac{c}{d} = \frac{a \times c}{b \times d}$$.
3. **Calculate $$\frac{5}{6} \times \frac{2}{1}$$:**
$$\frac{5}{6} \times \frac{2}{1} = \frac{5 \times 2}{6 \times 1} = \frac{10}{6}$$
4. **Division of fractions:** Dividing by a whole number is the same as multiplying by its reciprocal:
$$\frac{a}{b} \div c = \frac{a}{b} \times \frac{1}{c}$$
5. **Calculate $$\frac{4}{6} \div 2$$:**
$$\frac{4}{6} \div 2 = \frac{4}{6} \times \frac{1}{2} = \frac{4 \times 1}{6 \times 2} = \frac{4}{12}$$
6. **Simplify $$\frac{4}{12}$$:**
$$\frac{4}{12} = \frac{\cancel{4}^1}{\cancel{12}^3} = \frac{1}{3}$$
7. **Check the mixed number $$1 \frac{2}{3}$$:** The mixed number $$1 \frac{2}{3}$$ equals $$\frac{5}{3}$$ as an improper fraction.
8. **Clarify the confusion:** The expression $$\frac{4}{6} \div 2$$ equals $$\frac{1}{3}$$, not $$1 \frac{2}{3}$$. Possibly, the intended expression was $$\frac{4}{6} \times 2$$ or $$\frac{4}{6} \div \frac{2}{3}$$.
9. **If dividing by $$\frac{2}{3}$$:**
$$\frac{4}{6} \div \frac{2}{3} = \frac{4}{6} \times \frac{3}{2} = \frac{4 \times 3}{6 \times 2} = \frac{12}{12} = 1$$
10. **If multiplying $$\frac{4}{6} \times 2$$:**
$$\frac{4}{6} \times 2 = \frac{4 \times 2}{6} = \frac{8}{6} = 1 \frac{2}{6} = 1 \frac{1}{3}$$
11. **Conclusion:** The original statement $$\frac{4}{6} \div 2 = 1 \frac{2}{3}$$ is incorrect. The correct value is $$\frac{1}{3}$$.
**Final answers:**
- $$\frac{5}{6} \times 2 = \frac{10}{6} = 1 \frac{2}{6} = 1 \frac{1}{3}$$
- $$\frac{4}{6} \div 2 = \frac{1}{3}$$