Question

11-(13-?)=7 15-(4+?)=6 7+(14-?)=13

Answer 1

1) 4
2) 9
3) 6
Как-то так

Answer 2

11-(13-9)=7
1)13-9=4
2)11-4=7

15-(4+5)=6
1)4+5=9
2)15-9=6

7+(14-8)=13
1)14-8=6
7+6=13