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[tex]4,2-3\frac{5}{8}=4\frac{2}{10}-3\frac{5}{8}=4\frac{1}{5}-3\frac{5}{8}=4\frac{8}{40}-3\frac{25}{40}=3\frac{48}{40}-3\frac{25}{40}=\frac{23}{40}\\\\\boxed{\text{Odp}. \ \text{D}}[/tex]
[tex]4,2 = 4 \frac{1}{5} \\3\frac{5}{8} \\\\4 \frac{1}{5} - 3 \frac{5}{8} = 4 \frac{8}{40} - 3\frac{25}{40} = 3\frac{48}{40} - 3\frac{25}{40} = \frac{23}{40}[/tex]
Odp: D 23/40