Question

1. (+20) + ( ) = 30
2. (+20) + ( ) = 10
3. ( ) + (-5) = - 15
4. ( ) + (+12) = - 3
5. ( ) + (-4) + (+10) = 20
6. (+14) + (-18) + ( ) = 2
7. (+8) . ( ) = - 32
8. ( ) . (-5) = - 15
9. (+6) . ( ) . (-2) =-12
10. (+24) . ( ) = - 6
11. (-42) . (+3) =
12. (-18) . (-9) + ( ) = 0

Answer 1

Respuesta:

1. (+10)

2. ( -10)

3. ( -15)

4. ( -15)

5. ( +16)

6. (+6)

7. ( -4)

8. ( 3)

9. ( 1)