Question

формула примера (a+b):(a-b).
при:
$a = 3.5$
$b = 2\frac{1}{3}$

Answer 1

а+б=3,5+2 1/3= 35/10+7/3= 105/30+70/30=1 175/30
а-б=3,5-2 1/3= 35/10-7/3= 105/30-70/30=35/30
(a+b):(a-b)=175/30:35/30 =175/30*30/35= 175/35 =5