Question

(5) + (9) = ________________ (8) + (11 ) = ____________ (12) + (17) = ____________
(–5 ) + (9) = ____________ (8) + (–11) = ______________ (12) + (–17) = ___________
(5) + (–9) = ______________ (–8) + (11) = ______________ (–12) + (17) = ___________
(–5) + (–9) = ____________ (–8) + (–11) = _____________ (–12) + (–17) = __________
(21) + (49) = ___________ (15) + (63) = ______________ (18) + (107) = ____________
(21) + (–49) = __________ (15) + (–63) = __________ (18) + (–107) = ___________
(–21) + (49) = __________ (–15) + (63) = ____________ (–18) + (107) = ___________
(–21) + (–49) = _________ (–15) + (–63) = _________ (–18) + (–107) = __________

Answer 1

Respuesta: Observa

Explicación paso a paso:

1.  14

2. 19

3.  29

4.  4

5.  -3

6.  -5

7.  -4

8.  3