5-1/3=11-7целых11/15=12-8целых5/8=

1) [latex]5- \frac{1}{3} = \frac{15-1}{3} = \frac{14}{3} = 4\frac{2}{3} [/latex] 2) [latex] 11-7\frac{11}{15} =11- \frac{116}{15} = \frac{165-116}{15} = \frac{49}{15} = 3\frac{4}{15} [/latex] 3) [latex]12- 8\frac{5}{8} =12- \frac{69}{8} = \frac{96-69}{8} = \frac{27}{28} =3.375[/latex]

5 - 1/3 = 15/3 - 1/3 = 14/3 11 - 7 11/15 = 11 - 116/15 = 165/15 - 116/15 = = 49/15 = 3 4/15 12 - 8 5/8 = 12 - 69/8 = 96/8 - 69/8 = = 27/8 = 4 3/8