Question

Вычислите
3/8+1/12+1/6
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1/12+1/3+5/6

2/3-1/6-4/9
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7/9-5/12-5/18

Answer 1

№1
1)$frac{3}{8}^{(3)} + frac{1}{12}^{(2)} + frac{1}{6}^{(4)}$(НОК=24)
$frac{9}{24} + frac{2}{24} + frac{4}{24} = frac{15}{24}$
2)$frac{1}{12}^{(1)} + frac{1}{3}^{(4)} + frac{5}{6}^{(2)}$ (НОК=12)
$frac{1}{12}+ frac{4}{12}+ frac{10}{12}= frac{15}{12}$
3)$frac{15}{24}: frac{15}{12} = frac{15}{24}* frac{12}{15}= frac{1}{2}$

№2
1)$frac{2}{3}^{(6)} - frac{1}{6}^{(3)} - frac{4}{9}^{(2)}$ (НОК=18)
$frac{12}{18}- frac{3}{18}- frac{8}{18}= frac{1}{18}$
2)$frac{7}{9}^{(4)} - frac{5}{12}^{(3)} - frac{5}{18}^{(2)}$ (НОК=36)
$frac{28}{36}- frac{15}{36}- frac{10}{36}= frac{3}{36}= frac{1}{12}$
3)$frac{1}{18}: frac{1}{12}= frac{1}{18}: frac{12}{1} = frac{2}{3}$