(4/13у - 3/26) · у = 0
4/13у - 3/26 = 0 : у
4/13у - 3/26 = 0
4/13у = 3/26
у = 3/26 : 4/13
у = 3/26 · 13/4
у = (3·1)/(2·4)
у = 3/8
(4/13у - 3/26) · у = 0
4/13у - 3/26 = 0 : у
4/13у - 3/26 = 0
4/13у = 3/26
у = 3/26 : 4/13
у = 3/26 · 13/4
у = (3·1)/(2·4)
у = 3/8