Question

найдите значения выражений

Answer 1

№436

$1) \frac{5}{8} + \frac{5}{6} + \frac{7}{12}$ = $\frac{15}{24} + \frac{20}{24} = [tex]\frac{35}{24} + \frac{7}{12} = \frac{35}{24} + \frac{14}{24} = \frac{39}{24} = 1\frac{15}{24} = 1,625.$

НОЗ: 24 и 24.

2) $\frac{1}{5} + \frac{3}{8} - \frac{2}{9} = \frac{8}{40} + \frac{15}{40} = \frac{23}{40} - \frac{2}{9} = \frac{207}{360} - \frac{80}{360} = \frac{127}{360}$

НОЗ: 40 и 360.

3) $\frac{1}{4} + \frac{2}{9} - \frac{5}{36} = \frac{9}{36} + \frac{8}{36} = \frac{17}{36} - \frac{5}{36} = \frac{12}{36} = \frac{1}{3}$

НОЗ: 36 и 36.

4) $\frac{3}{4} + \frac{4}{5} + \frac{1}{20} = \frac{15}{20} + \frac{16}{20} = \frac{31}{20} + \frac{1}{20} = \frac{32}{20} = 1\frac{12}{20} = 1\frac{3}{5} = 1,6$

НОЗ: 20 и 20.

5) $\frac{3}{4} + \frac{5}{12} - \frac{1}{9} = \frac{9}{12} + \frac{5}{12} = \frac{14}{12} - \frac{1}{9} = \frac{42}{36} - \frac{4}{36} = \frac{38}{36} = 1\frac{2}{36} = 1\frac{1}{18}$

НОЗ: 12 и 36.

6) $\frac{4}{15} + \frac{2}{5} + \frac{7}{10} = \frac{4}{15} + \frac{6}{15} = \frac{10}{15} + \frac{7}{10} = \frac{20}{30} + \frac{21}{30} = \frac{41}{30} = 1\frac{11}{30}$

НОЗ: 15 и 30.