01 Íàéäèòå çíà÷åíèå âûðàæåíèÿ `+`(`*`(`/`(4, 5), `*`(`+`(`/`(13, 30), -`/`(11, 20))))) . 

ÐÅØÅÍÈÅ 

 

(13/30-11/20)*(1+4/5) 

http://www.wolframalpha.com/input/?i=%2813%2F30-11%2F20%29*%281%2B4%2F5%29 

`*`(`+`(`/`(13, 30), -`/`(11, 20)), `*`(`+`(1, `/`(4, 5)))) = -`/`(21, 100)-.21000 

ÎÒÂÅÒ 

-0.21