Question

64 1/4-25 5/7+6 3/14=. 12 7/10- 5 3/4+6 1/5=.
42 7/15-9 3/4+5 11/12=. Пжжж помогииеее

Answer 1

1)

$64 frac{1}{4} - 25 frac{5}{7} + 6 frac{3}{14} = frac{257}{4} - frac{180}{7} + frac{87}{14} = frac{1799}{28} - frac{720}{28} + frac{174}{28} = frac{1253}{28} = 44 frac{21}{28} = 44 frac{3}{4}$

2)

$12 frac{7}{10} - 5 frac{3}{4} + 6 frac{1}{5} = frac{127}{10} - frac{23}{4} + frac{31}{5} = frac{254}{20} - frac{115}{20} + frac{124}{20} = frac{263}{20} = 13 frac{3}{20}$

3)

$42 frac{7}{15} - 9 frac{3}{4} + 5 frac{11}{12} = frac{637}{15} - frac{39}{4} + frac{71}{12} = frac{2548}{60} - frac{585}{60} + frac{355}{60} = frac{2318}{60} = 38 frac{38}{60} = 38 frac{19}{30}$