помогите решить!!!, выполните дробленье:

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г) 15/22 : 15/33 = 15/22 33/15 = 33/22

=1  11/22=11/2;

д) 1/2 : 3/10 = 1/2 10/3 = 5/3 = 1 2/3 ;

е) 8/9 : 9/10 = 8/9 10/9 = 80/81 ;

ж) 1/17 : 3/85 = 1/17 85/3 = 5/3 = 1 2/3 ;

з) 2/3 : 5/12 = 2/3 12/5 = 8/5 = 1 3/5 ;

и) 5/6 : 19/24 = 5/6 24/19 = 20/19 = 1 1/19 ;