(черта / это дробь тема: смешанные ) sos 1) 7 14/15+2 1/15 2)9 24/27+12 13/27 3)1-12/19 4)8-3 6/15 5)12-11 6/11 6)16 3/13-6 8/13 7)13 4/9-2 8/9 8)10 7/16-4 12/16 9)29 43/53-8 49/53 10)(20 16/25+13 9/ 4/14+7 13/14) кому не ! решите уравнения: 7 7/30-(5 11/30-y)=3 19/30

тогда поставь ок?
1)7 14/15 + 2 1/15 = 9 15/15 =10

2)9 24/27 + 12 13/27 = 21 37/27 = 22 10/27
3)1-12/19 = 19/19 - 12/19 = 7/19
4)8-3 6/15 = 7 15\15 - 3 6/15 = 4 9/15
5)12-11 6/11 = 11 11/11 - 11 6/11 = 5/11
6)16 3/13 - 6 8/13 = 15 16/13 - 6 8/13 = 9 8/13
7)13 4/9-2 8/9 = 12 13/9 - 2 8/9 = 10 5/9
8)10 7/16 - 4 12/16 = 9 23/16 - 4 12/16 = 5 11/16
9)29 43/53 - 8 49/53 = 28 96/53 - 8 49/53 = 20 47/53
10)(20 16/25+13 9/25)-(23 4/14+7 13/14) = 34 - 31 3/14 = 33 14/14 -31 3/14 =2 11/14

7 7/30-(5 11/30 - y) = 3 19/30

5 11/30 - у = 7 7/30 - 3 19/30

5 11/30 - у = 3 6/10

у = 5 11/30 - 3 6/10

у = 1 23/30