Question

ПОМОГИТЕ СРОЧНО ДАЮ 50 БАЛЛОВ 2-ОЕ УРАВНЕНИЕ​

Answer 1

$\displaystyle 2\frac{1}{4} +4\frac{1}{2} :(3\frac{2}{5} -1\frac{1}{2} :y)=4\frac{1}{6}$

$\displaystyle 4\frac{1}{2} :(3\frac{2}{5} -1\frac{1}{2} :y)=4\frac{1}{6}-2\frac{1}{2}$

$\displaystyle 4\frac{1}{2} :(3\frac{2}{5} -1\frac{1}{2} :y)=4\frac{1}{6}-2\frac{3}{6}$

$\displaystyle 4\frac{1}{2} :(3\frac{2}{5} -1\frac{1}{2} :y)=3\frac{7}{6}-2\frac{3}{6}$

$\displaystyle 4\frac{1}{2} :(3\frac{2}{5} -1\frac{1}{2} :y)=1\frac{4}{6}$

$\displaystyle 3\frac{2}{5} -1\frac{1}{2} :y=4\frac{1}{2}:1\frac{2}{3}$

$\displaystyle 3\frac{2}{5} -1\frac{1}{2} :y=\frac{9}{2} *\frac{3}{5}$

$\displaystyle 3\frac{2}{5} -1\frac{1}{2} :y=\frac{27}{10}$

$\displaystyle 1\frac{1}{2} :y=3\frac{2}{5} -\frac{27}{10}$

$\displaystyle 1\frac{1}{2} :y=\frac{17}{5} -\frac{27}{10}$

$\displaystyle 1\frac{1}{2} :y=\frac{34}{10} -\frac{27}{10}=\frac{7}{10}$

$\displaystyle y=1\frac{1}{2} :\frac{7}{10} \\\displaystyle y=\frac{2}{3} *\frac{7}{10} \\\displaystyle y=\frac{7}{15}$