(16-х)÷13 4/7=7/9÷10 5/9
( 16 - Х ) : 13 4/7 = 7/9 : 10 5/9 ( 16 - Х ) : 95/7 = 7/9 : 95/9 ( 16 - Х ) : 95/7 = 7/95 16 - Х = 7/95 • 95/7 16 - Х = 1 Х = 16 - 1 Х = 15