To divide fractions, multiply by the reciprocal.<br><br>
&bull; \frac{3}{4} ÷ \frac{1}{2} = \frac{3}{4} × \frac{2}{1}<br>
&bull; = \frac{3 \times 2}{4 \times 1} = \frac{6}{4}<br>
&bull; Simplify: divide numerator and denominator by 2<br>
&bull; \frac{6}{4} = \frac{3}{2}<br>
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Final Answer: a = 3, b = 2