-5 5/9 : (5 5/6 - 10 )

-5 5/9 : -4 1/6 = -50/9 : -25/6 = -50/9 * - 6/25 = 1 1/3

-5 5/9 : (5 5/6 - 10 ) -5 5/9 : (4 1/6) -50/9 * -6/25 2/3 * 2 4/3 1 1/3

-5 5/9 : (5 5/6 - 10 )=-5 5/9 : -4 i 1/6=-50/9*-25/6=1250/54