если что-то не понятно – спрашивайте.
Ответ: а) 1/5; б)7/5.
Пошаговое объяснение:
а)
б)
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если что-то не понятно – спрашивайте.
Ответ: а) 1/5; б)7/5.
Пошаговое объяснение:
а)![\frac{\frac{1}{3} -\frac{1}{5}}{\frac{2}{3} } =\frac{(\frac{1}{3} -\frac{1}{5} )*15}{\frac{2}{3}*15 }=\frac{\frac{15}{3} -\frac{15}{5}}{\frac{30}{3}}=\frac{5-3}{10}= \frac{2}{10} =\frac{1}{5} . \frac{\frac{1}{3} -\frac{1}{5}}{\frac{2}{3} } =\frac{(\frac{1}{3} -\frac{1}{5} )*15}{\frac{2}{3}*15 }=\frac{\frac{15}{3} -\frac{15}{5}}{\frac{30}{3}}=\frac{5-3}{10}= \frac{2}{10} =\frac{1}{5} .](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cfrac%7B1%7D%7B3%7D%20-%5Cfrac%7B1%7D%7B5%7D%7D%7B%5Cfrac%7B2%7D%7B3%7D%20%7D%20%3D%5Cfrac%7B%28%5Cfrac%7B1%7D%7B3%7D%20-%5Cfrac%7B1%7D%7B5%7D%20%29%2A15%7D%7B%5Cfrac%7B2%7D%7B3%7D%2A15%20%7D%3D%5Cfrac%7B%5Cfrac%7B15%7D%7B3%7D%20-%5Cfrac%7B15%7D%7B5%7D%7D%7B%5Cfrac%7B30%7D%7B3%7D%7D%3D%5Cfrac%7B5-3%7D%7B10%7D%3D%20%5Cfrac%7B2%7D%7B10%7D%20%3D%5Cfrac%7B1%7D%7B5%7D%20.)
б)![\frac{(\frac{2}{3}+\frac{1}{2})*6}{\frac{5}{6}*6} =\frac{(\frac{12}{3}+\frac{6}{2})}{\frac{30}{6}}=\frac{4+3}{5} =\frac{7}{5} . \frac{(\frac{2}{3}+\frac{1}{2})*6}{\frac{5}{6}*6} =\frac{(\frac{12}{3}+\frac{6}{2})}{\frac{30}{6}}=\frac{4+3}{5} =\frac{7}{5} .](https://tex.z-dn.net/?f=%5Cfrac%7B%28%5Cfrac%7B2%7D%7B3%7D%2B%5Cfrac%7B1%7D%7B2%7D%29%2A6%7D%7B%5Cfrac%7B5%7D%7B6%7D%2A6%7D%20%3D%5Cfrac%7B%28%5Cfrac%7B12%7D%7B3%7D%2B%5Cfrac%7B6%7D%7B2%7D%29%7D%7B%5Cfrac%7B30%7D%7B6%7D%7D%3D%5Cfrac%7B4%2B3%7D%7B5%7D%20%3D%5Cfrac%7B7%7D%7B5%7D%20.)