Найди значение выродения 15 7/9 + 10 3/9 ( 6 2/3-4 2/3)

( 3,6 - 1 2/3) : ( 4 1/15 - 2 7/9 ) * 2,6=1/6
1). 3,6 - 1 2/3=3 6/10 -1 2/3=3 3/5 - 1 2/3=3 9/15- 1 10/15=2 24/15- 1 10/15= 1 14/15
2) 4 1/15 - 2 7/9=4 3/45 - 2 35/45=3 48/45 - 2 35/45 = 1 13/45
3) 1 13/45 * 2,6=58/13*13/5=58/5=11,6
4) 1 14/15 :11,6=29/15:11 3/5=29/15:58/5=1/6 

1) 6 2/3 - 4 2/3=2
2) 10 3/9 · 2=93/9·2=186/9=20 6/9
3) 15 7/9 + 20 6/9=35 13/9=36 4/9