(X+1.3)/(X - 6.4) = (11.6-2.65)/(0.35+0.9)
(X+1.3)/(X - 6.4) = 8,95/1,25
(X+1.3)/(X - 6.4) = 7,16
X+1.3 = 7,16·(X - 6.4)
X+1.3 = 7,16X - 45,824
6,16X = 47,124
х = 7,65
(X+1.3)/(X - 6.4) = (11.6-2.65)/(0.35+0.9)
(X+1.3)/(X - 6.4) = 8,95/1,25
(X+1.3)/(X - 6.4) = 7,16
X+1.3 = 7,16·(X - 6.4)
X+1.3 = 7,16X - 45,824
6,16X = 47,124
х = 7,65