Question

Найдите значение выражения: 3 а ) 5/8 * 1 7/9 * 21/58
Б) (2/9 + 5/6) * 36
В) ( 4 -7/8) * ( 3+ 1/5)

Answer 1

А) $\frac{5}{8} * \frac{17}{9}* \frac{21}{58} = \frac{5*17*21}{8*9*58} = \frac{1785}{4176}$

Б)$( \frac{2}{9} + \frac{5}{6} ) *36 = ( \frac{4+15}{18})*36 = \frac{19}{18} * 36 = 2$

В) (4-$(4- \frac{7}{8} ) * ( 5+\frac{1}{5)} = ( \frac{32-7}{8})*( \frac{25+1}{5} ) = \frac{25*26}{8*5} = \frac{65}{4} = 8,25$

Answer 2

а) 3 5/8 * 16/9 *21/58 = (29*16*21) / (8*9*58) = 14/6 = 2 2/6 = 2 1/3
б) = (4/18 + 15/18) * 36 = 19/18 * 36 = 38
в) = (3 1/8) * 3 1/5) = (25 *16)/(8*5) = 10
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