7 5/8 + 4 2/3-8 3/16;

9 23/25-4 7/10-2 1/5;

20 - (3 1/6+2 3/4) ;

1 5/6 + (3-1 7/10) -

Выполнить действия

Помогите

7 5/8 + 4 2/3-8 3/16=4 5/48

1) 7 5/8+4 2/3=7 15/24+4 16/24=

=11 31/24=12 7/24

2) 12 7/24-8 3/16=12 14/48-8 9/48=

=4 5/48

9 23/25-4 7/10-2 1/5=3 1/50 либо 3.02

=9 46/50-4 35/50-2 1/5=

=5 11/50-2 1/5=5 11/50-2 10/50=

=3 1/50

20 - (3 1/6+2 3/4) = 20 - (3 2/12+2 9/12) =

=20-5 11/12=19 12/12 - 5 11/12=14 1/12

1 5/6 + (3-1 7/10) = 1 5/6 + (2 10/10-1 7/10) =

=1 5/6+1 3/10=1 25/30+1 9/30=

=2 34/30=3 4/30=3 2/15