1)
5 - h -18 = 25

2)
- 15 + 18_ z = - 23

3)
27 + r 2 = - 3

4)
26 + n -10 = 18

5)
19 - b 15 = - 17

6)
f - 15 -9 = - 13

7)
v + 13 -11 = - 20

8)
- 16 - 8d = 10

9)
x - 2 19 = 21

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