Question

помогите пожалуйста ​

Answer 1

Ответ:

1.005. 5;

1.006. 1

Пошаговое объяснение:

1.005.

$1)\,\,2\displaystyle\frac{3}{4}:1,1 + 3\displaystyle\frac{1}{3} = \displaystyle\frac{{11}}{4}:\displaystyle\frac{{11}}{{10}} + \displaystyle\frac{{10}}{3} = \displaystyle\frac{{11}}{4} \cdot \displaystyle\frac{{10}}{{11}} + \displaystyle\frac{{10}}{3} = \displaystyle\frac{5}{2} + \displaystyle\frac{{10}}{3} = \displaystyle\frac{{35}}{6};$

$2)\,\,2,5 - 0,4 \cdot 3\displaystyle\frac{1}{3} = \displaystyle\frac{5}{2} - \displaystyle\frac{2}{5} \cdot \displaystyle\frac{{10}}{3} = \displaystyle\frac{5}{2} - \displaystyle\frac{4}{3} = \displaystyle\frac{7}{6};$

$3)\,\,\displaystyle\frac{{35}}{6}:\displaystyle\frac{7}{6} = \displaystyle\frac{{35}}{6} \cdot \displaystyle\frac{6}{7} = 5;$

$4)\,\,5:\displaystyle\frac{5}{7} = 5 \cdot \displaystyle\frac{7}{5} = 7;$

$5)\,\,\left( {2\displaystyle\frac{1}{6} + 4,5} \right) \cdot 0,375 = \left( {\displaystyle\frac{{13}}{6} + \displaystyle\frac{9}{2}} \right) \cdot \displaystyle\frac{3}{8} = \displaystyle\frac{{20}}{3} \cdot \displaystyle\frac{3}{8} = \displaystyle\frac{5}{2};$

$6)\,\,2,75 - 1\displaystyle\frac{1}{2} = \displaystyle\frac{{11}}{4} - \displaystyle\frac{3}{2} = \displaystyle\frac{5}{4};$

$7)\,\,\displaystyle\frac{5}{2}:\displaystyle\frac{5}{4} = \displaystyle\frac{5}{2} \cdot \displaystyle\frac{4}{5} = 2;$

$8)\,\,7 - 2 = 5.$

1.006.

$1)\,\,\left( {13,75 + 9\displaystyle\frac{1}{6}} \right) \cdot 1,2 = \left( {\displaystyle\frac{{55}}{4} + \displaystyle\frac{{55}}{6}} \right) \cdot \displaystyle\frac{6}{5} = 55 \cdot \displaystyle\frac{5}{{12}} \cdot \displaystyle\frac{6}{5} = \displaystyle\frac{{55}}{2};$

$2)\,\,\left( {10,3 - 8\displaystyle\frac{1}{2}} \right) \cdot \displaystyle\frac{5}{9} = \left( {\displaystyle\frac{{103}}{{10}} - \displaystyle\frac{{17}}{2}} \right) \cdot \displaystyle\frac{5}{9} = \displaystyle\frac{9}{5} \cdot \displaystyle\frac{5}{9} = 1;$

$3)\,\,\left( {6,8 - 3\displaystyle\frac{3}{5}} \right) \cdot 5\displaystyle\frac{5}{6} = \left( {\displaystyle\frac{{34}}{5} - \displaystyle\frac{{18}}{5}} \right) \cdot \displaystyle\frac{{35}}{6} = \displaystyle\frac{{16}}{5} \cdot \displaystyle\frac{{35}}{6} = \displaystyle\frac{{56}}{3};$

$4)\,\,\left( {3\displaystyle\frac{2}{3} - 3\displaystyle\frac{1}{6}} \right) \cdot 56 = \left( {\displaystyle\frac{{11}}{3} - \displaystyle\frac{{19}}{6}} \right) \cdot 56 = \displaystyle\frac{1}{2} \cdot 56 = 28;$

$5)\,\,\displaystyle\frac{{56}}{3}:28 = \displaystyle\frac{{56}}{3} \cdot \displaystyle\frac{1}{{28}} = \displaystyle\frac{2}{3};$

$6)\,\,\displaystyle\frac{{55}}{2} + \displaystyle\frac{2}{3} - 27\displaystyle\frac{1}{6} = \displaystyle\frac{{55}}{2} + \displaystyle\frac{2}{3} - \displaystyle\frac{{163}}{6} = \displaystyle\frac{{165 + 4 - 163}}{6} = 1.$