05 Íàéäèòå çíà÷åíèå âûðàæåíèÿ `+`(`/`(31, 15), `-`(`*`(.3, `/`(2, 9)))) . 

ÐÅØÅÍÈÅ 

 

31/15-.3*(2/9)
http://www.wolframalpha.com/input/?i=31%2F15-.3*%282%2F9%29 

`+`(`/`(31, 15), `-`(`*`(.3, `/`(2, 9)))) = 2.000000000 

ÎÒÂÅÒ 

2