4 1 per 2 - 2 1 per 4 : 3 3 per8 =

122 per 33
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[tex]4 \ \frac{1}{2} - 2\ \frac{1}{4} \div 3 \ \frac{3}{8} = 4.5 - \: (4.5 \: \times 3.375 )\: = 4.5 \: - \: 1.3 = 3.2 \\ 3.2 = 3 \frac{1}{5} [/tex]
maaf kalau salah