Question

Efectuar:

1. (+5)(+7) =


2. (-10)(+4) =


3. (-7)(-3) =


4. (+8)(-11) =


5. - [(-8)(-5)] =


6. - [(-10)(+2)] =


7. - { - [(+8)(+12)]} =


8. (-8)(+2) + (-1)(+4) =


9. (-4)(-5) + (-2)(-3) =



10. (+7)(-3) - (+5)(-4) =

Answer 1

1. (+5)(+7) = 35

2. (-10)(+4) = -40

3. (-7)(-3) = 21

4. (+8)(-11) = -88

5. - [(-8)(-5)] = -40

6. - [(-10)(+2)] = 20

7. - { - [(+8)(+12)]} = 96

8. (-8)(+2) + (-1)(+4) = -20

9. (-4)(-5) + (-2)(-3) = 26

10. (+7)(-3) - (+5)(-4) = -1

Explicación paso :

Espero te ayude :3