Simplify:12(34+14)÷13\frac{1}{2} \left( \frac{3}{4} + \frac{1}{4} \right) \div \frac{1}{3}21(43+41)÷31 A1/4 B1/3 C3/2 D1/2 Show answer & explanationCorrect answer: CExplanation12(34+14)÷13=12(44)÷12=12×1÷13=12×3=32=1.5\frac{1}{2} \left( \frac{3}{4} + \frac{1}{4} \right) \div \frac{1}{3} = \frac{1}{2} \left( \frac{4}{4} \right) \div \frac{1}{2} \\ = \frac{1}{2} \times 1 \div \frac{1}{3} \\ = \frac{1}{2} \times 3 \\ = \frac{3}{2} = 1.521(43+41)÷31=21(44)÷21=21×1÷31=21×3=23=1.5