Question

(5/12-х):1/2=2/9
срочно​

Answer 1

Ответ:

(5/12-х):1/2=2/9

$(\frac{5}{12}-x):\frac{1}{2}=\frac{2}{9} ;\\\\(\frac{5}{12}-x)*2=\frac{2}{9} ;\\\\2*\frac{5}{12}-2*x=\frac{2}{9};\\\\\frac{10}{12}-2x=\frac{2}{9};\\\\\frac{5}{6}-2x=\frac{2}{9}; \\\\-2x=\frac{2}{9}-\frac{5}{6};\\\\-2x=\frac{2*2-5*3}{18} ;\\\\-2x=\frac{4-15}{18} ;\\\\-2x=\frac{-11}{18} ;\\\\-2x=-\frac{11}{18} ;\\\\x=-\frac{11}{18} :(-2);\\\\x=\frac{11}{18}*\frac{1}{2};$

$x=\frac{11}{36}.$