помогите решить уровнение. хотя бы а и б
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Ответил 25hjoerf10
0
а)
![2 frac{4}{15} +z=1.3-2 frac{5}{6} \ \ 2 frac{4}{15} +z=1 frac{3}{10} -2 frac{5}{6} \ \ 2 frac{8}{30} +z=1 frac{9}{30} -2 frac{25}{30} \ \ z=1 frac{9}{30} -2 frac{25}{30} -2 frac{8}{30} \ \ z=-3 frac{24}{30} \ \ z=-3.8 \](https://tex.z-dn.net/?f=2+frac%7B4%7D%7B15%7D+%2Bz%3D1.3-2+frac%7B5%7D%7B6%7D++%5C++%5C+2+frac%7B4%7D%7B15%7D+%2Bz%3D1+frac%7B3%7D%7B10%7D+-2+frac%7B5%7D%7B6%7D++%5C++%5C+2+frac%7B8%7D%7B30%7D+%2Bz%3D1+frac%7B9%7D%7B30%7D+-2+frac%7B25%7D%7B30%7D++%5C++%5C+z%3D1+frac%7B9%7D%7B30%7D+-2+frac%7B25%7D%7B30%7D+-2+frac%7B8%7D%7B30%7D+%5C++%5C+z%3D-3+frac%7B24%7D%7B30%7D++%5C++%5C+z%3D-3.8+%5C+ "2 frac{4}{15} +z=1.3-2 frac{5}{6} \ \ 2 frac{4}{15} +z=1 frac{3}{10} -2 frac{5}{6} \ \ 2 frac{8}{30} +z=1 frac{9}{30} -2 frac{25}{30} \ \ z=1 frac{9}{30} -2 frac{25}{30} -2 frac{8}{30} \ \ z=-3 frac{24}{30} \ \ z=-3.8 \")
Ответ: z = - 3,8.
б)
![k-3.2=-2 frac{1}{7} +1 frac{5}{14} \ \ k-3.2=-2 frac{2}{14} +1 frac{5}{14} \ \ k-3.2= -frac{11}{14} \ \ k=- frac{11}{14} +3.2 \ \ k= frac{-11+3.2*14}{14} \ \ k= frac{-11+44.8}{14} \ \ k= frac{33.8}{14} \ \ k=2 frac{29}{70} \](https://tex.z-dn.net/?f=k-3.2%3D-2+frac%7B1%7D%7B7%7D+%2B1+frac%7B5%7D%7B14%7D++%5C++%5C+k-3.2%3D-2+frac%7B2%7D%7B14%7D+%2B1+frac%7B5%7D%7B14%7D++%5C++%5C+k-3.2%3D+-frac%7B11%7D%7B14%7D++%5C++%5C+k%3D-+frac%7B11%7D%7B14%7D+%2B3.2+%5C++%5C+k%3D+frac%7B-11%2B3.2%2A14%7D%7B14%7D++%5C++%5C+k%3D+frac%7B-11%2B44.8%7D%7B14%7D++%5C++%5C+k%3D+frac%7B33.8%7D%7B14%7D++%5C++%5C+k%3D2+frac%7B29%7D%7B70%7D++%5C+ "k-3.2=-2 frac{1}{7} +1 frac{5}{14} \ \ k-3.2=-2 frac{2}{14} +1 frac{5}{14} \ \ k-3.2= -frac{11}{14} \ \ k=- frac{11}{14} +3.2 \ \ k= frac{-11+3.2*14}{14} \ \ k= frac{-11+44.8}{14} \ \ k= frac{33.8}{14} \ \ k=2 frac{29}{70} \")
Ответ: k = 2 29/70.
Ответ: z = - 3,8.
б)
Ответ: k = 2 29/70.
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