Question

Деление обыкновенных дробей и смешанных чисел. Урок 3

Реши уравнение и выполни соответствие.




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Answer 1

$\tt\displaystyle\frac{22}{35}*m=\frac{2}{7}$

$m=\tt\displaystyle\frac{2}{7}:\frac{22}{35}$

$m=\tt\displaystyle\frac{2}{7}*\frac{35}{2}$

$m=\tt\displaystyle\frac{2*35}{7*2}$

$m=\tt\displaystyle\frac{\not2*5*\not7}{\not7*11}$

$m=\tt\displaystyle\frac{5}{11}$

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$\tt\displaystyle\frac{8}{15}*m=\frac{2}{5}$

$m=\tt\displaystyle\frac{2}{5}:\frac{8}{15}$

$m=\tt\displaystyle\frac{2}{5}*\frac{15}{8}$

$m=\tt\displaystyle\frac{2*15}{5*8}$

$m=\tt\displaystyle\frac{\not2*3*\not5}{\not5*\not2*4}$

$m=\tt\displaystyle\frac{3}{4}$

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$m*\tt\displaystyle\frac{20}{91}=\frac{4}{7}$

$m=\tt\displaystyle\frac{4}{7}:\frac{20}{91}$

$m=\tt\displaystyle\frac{4}{7}*\frac{91}{20}$

$m=\tt\displaystyle\frac{4*91}{7*20}$

$m=\tt\displaystyle\frac{\not4*\not7*13}{\not7*\not4*5}$

$m=\tt\displaystyle\frac{13}{5}$

$m=2\tt\displaystyle\frac{3}{5}$

=====================

$\tt\displaystyle\frac{30}{133}*m=\frac{6}{7}$

$m=\tt\displaystyle\frac{6}{7}:\frac{30}{133}$

$m=\tt\displaystyle\frac{6}{7}*\frac{133}{30}$

$m=\tt\displaystyle\frac{6*133}{7*30}$

$m=\tt\displaystyle\frac{\not6*\not7*19}{\not7*5*\not6}$

$m=\tt\displaystyle\frac{19}{5}$

$m=3\tt\displaystyle\frac{4}{5}$