Помогите надо с начала а+2/9=5/6 и потом весь столбик

Ответ:

в фото решение до 9 номера

Ответ:

Пошаговое объяснение:

[tex]1)a+\frac{2}{9} =\frac{5}{6} \\ a=\frac{5}{6} -\frac{2}{9} \\ a=\frac{15}{18} -\frac{4}{18} \\ a=\frac{11}{18} \\ \\ 2)x+\frac{1}{12} =\frac{1}{3} +\frac{1}{4} \\ x+\frac{1}{12} =\frac{4}{12} +\frac{3}{12}\\ x+\frac{1}{12} =\frac{7}{12}\\ x=\frac{7}{12}-\frac{1}{12}\\ x=\frac{6}{12}\\ x=\frac{1}{2} \\ \\ 3)\frac{7}{12} -x=\frac{11}{24} \\ x= \frac{7}{12}-\frac{11}{24} \\ x=\frac{14}{24} -\frac{11}{24} \\ x=\frac{3}{24} \\ x=\frac{1}{8} \\ \\[/tex]

[tex]4)y-\frac{1}{6}=\frac{3}{8} \\ y=\frac{3}{8}+\frac{1}{6}\\ y=\frac{9}{24} +\frac{4}{24} \\ y=\frac{13}{24} \\ \\ 5)\frac{2}{7} +x=\frac{11}{14} \\ x=\frac{11}{14} -\frac{2}{7}\\ x=\frac{11}{14} -\frac{4}{14} \\ x=\frac{7}{14} \\ x=\frac{1}{2} \\ \\ 6)x+\frac{1}{8} =\frac{5}{8} -\frac{1}{4}\\ x+\frac{1}{8} =\frac{5}{8} -\frac{2}{8}\\ x+\frac{1}{8} =\frac{3}{8} \\ x=\frac{3}{8} -\frac{1}{8} \\ x=\frac{2}{8} \\ x=\frac{1}{4} \\ \\[/tex]

[tex]7)7-x=3\frac{1}{3} \\ x=7-3\frac{1}{3} \\ x=6\frac{3}{3} -3\frac{1}{3} \\ x=3\frac{2}{3} \\ \\ 8)6\frac{1}{12} -x=2\frac{5}{12} \\ x=6\frac{1}{12} -2\frac{5}{12} \\ x=5\frac{13}{12}-2\frac{5}{12} \\ x=3\frac{8}{12}\\ x=3\frac{2}{3} \\ \\ 8)x-3\frac{7}{8} =5\frac{11}{12}\\ x=5\frac{11}{12}+3\frac{7}{8} \\ x=5\frac{22}{24} +3\frac{21}{24} \\ x=8\frac{43}{24} \\ x=9\frac{19}{24}[/tex]

[tex]9)5\frac{8}{9} +x=7\frac{1}{18} \\ x=7\frac{1}{18}-5\frac{8}{9} \\ x=7\frac{1}{18} -5\frac{16}{18} \\ x=6\frac{19}{18} -5\frac{16}{18}\\ x=1\frac{3}{18} \\ x=1\frac{1}{6} \\ \\ 10)9\frac{6}{17} -x=4\frac{11}{34} \\ x=9\frac{6}{17} -4\frac{11}{34} \\ x=9\frac{12}{34} -4\frac{11}{34}\\ x=5\frac{1}{34} \\ \\ 11)x+5\frac{5}{7} =8\frac{3}{14} \\ x=8\frac{3}{14} -5\frac{5}{7} \\ x=8\frac{3}{14} -5\frac{10}{14} \\ x=7\frac{17}{14} -5\frac{10}{14} \\ x=2\frac{7}{14} \\ x=2\frac{1}{2}[/tex][tex]12)x-\frac{4}{9}x=\frac{2}{5} \\ \frac{9}{9}x-\frac{4}{9}x=\frac{2}{5} \\ \frac{5}{9}x=\frac{2}{5} \\ x=\frac{2}{5} :\frac{5}{9} \\ x=\frac{2}{5}*\frac{9}{5} \\ x=\frac{18}{25}[/tex]