Question

помогите обчистить дроби!!!

5/7+1/4=

7/15-3/10=

11/18-4/9=

7/30+9/20=

11/16-5/12=

5/18+4/27=

19/42-3/28=

8/9-5/6+1/3=

9/16+5/6-7/24=

Answer 1

$\frac{5}{7} + \frac{1}{4} = \frac{20 + 7}{28} = \frac{27}{28}$

$\frac{7}{15} - \frac{3}{10} = \frac{14 - 9}{30} = \frac{5}{30} = \frac{1}{6}$

$\frac{11}{18} - \frac{4}{9} = \frac{11 - 8}{18} = \frac{3}{18} = \frac{1}{6}$

$\frac{7}{30} + \frac{9}{20} = \frac{14 + 27}{60} = \frac{41}{60}$

$\frac{11}{16} - \frac{5}{12} = \frac{33 - 20}{48} = \frac{13}{48}$

$\frac{5}{18} + \frac{4}{27} = \frac{15 + 8}{54} = \frac{23}{54}$

$\frac{19}{42} - \frac{3}{28} = \frac{38 - 9}{84} = \frac{27}{84}$

$\frac{8}{9} - \frac{5}{6} + \frac{1}{3} = \frac{16 - 15 + 6}{18} = \frac{7}{18}$

$\frac{9}{16} + \frac{5}{6} - \frac{7}{24} = \frac{27 + 40 - 14}{48} = \frac{53}{48}$

Answer 2

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