Question

Очень срочно
№3
Благодарю.

Answer 1

$\frac{0,4+8*(5-0,8* \frac{5}{8})-5:2 \frac{1}{2} }{(1 \frac{7}{8}*8-(8,9-2,6: \frac{2}{3} ) )*34 \frac{2}{5} }*90= \frac{0,4+8*(5- \frac{8}{10} * \frac{5}{8})-5: \frac{5}{2}}{( \frac{15}{8}*8-(8 \frac{9}{10}-2 \frac{6}{10} * \frac{3}{2} ) )*\frac{172}{5}} *90=$$\frac{ \frac{4}{10} +8*(5- \frac{1}{2})-5* \frac{2}{5}}{(15-(\frac{89}{10}- \frac{26}{10} * \frac{3}{2} ) )*\frac{172}{5}} *90= \frac{ \frac{2}{5} +8*(5- \frac{1}{2})-2}{(15-(\frac{89}{10}- \frac{13*3}{10} ) )*\frac{172}{5}} *90=$$\frac{ \frac{2}{5} +8*(5- \frac{1}{2})-2}{(15-(\frac{89}{10}- \frac{39}{10} ) )*\frac{172}{5}} *90= \frac{ \frac{2}{5} +8* \frac{10-1}{2}-2}{(15-\frac{89-39}{10} )*\frac{172}{5}} *90=$$\frac{ \frac{2}{5} +4*9-2}{(15-\frac{50}{10} )*\frac{172}{5}} *90=\frac{ \frac{2}{5} +36-2}{(15-5 )*\frac{172}{5}} *90=\frac{ \frac{2}{5}+34 }{10*\frac{172}{5}} *90=\frac{ \frac{2+172}{5} }{2*172} *90=\frac{ \frac{2+172}{5} }{2*172} *90$$\frac{ \frac{172}{5} }{344} *90=\frac{172}{5} :344 *90=\frac{172}{5} *\frac{1}{344} *90=\frac{172}{5} *\frac{1}{344} *90= \frac{172*90}{5*344}=$$\frac{172*90}{5*344}= \frac{18}{1*2}=9$