Question

III) Resolver los siguientes ejercicios de adición y sustracción combinadas:

1) –5 + 7 – 8 =

2) –9 – –12 – 4 =

3) 6 – 14 + – 21 =

4) –17 + –23 – –45 =

5) –23 – 34 – –76 – 28 =

6) 43 – 29 – 65 – –83 + 78 =

7) –67 – 23 – –64 + –62 – 28 =

8) –34 + –41 + 69 – –38 + 98 + –46 =

9) –96 – (24 – 47) + (38 – –31) – (–17 – –54) =

10) 1– {2 + [–6 – (2 + –5) – (7 – –3) +1] – [(–12– 15) +29]}=

11) –16 – { –25 – [–34 + (–26 – –45) – (–12 –23) ] –15} =

12) – (23 – 45) – (75 – 34) – (54 – 67) – (–5 – –12) =

13) –11 – { 23 +[(–23 –56) – (27 – 65)] – [–12 + (–8 –17)} =

14) –16 – [–13 – (25 – 37) + (34 + 32)] – [–26 – (45 –57)] =

Por favor ayuda:) ​

Answer 1

Respuesta:

1) respuesta -6

2) -1

3) -29

4) -85

5) -23

8) 150

9) -41

10) -45

Answer 2

 Las respuestas de los ejercicios de adición y sustracción son:

1)   -6

2)  -1

3)  -29

4)   5

5)   -9

6)   110

7)  -116

8)  84

9)  -41

10)  13

11)  44

12)  -13

13) -30

14) -67

Procedimiento de las operaciones combinadas:

1.  –5 + 7 – 8
   =  2 - 8
   = -6
   
2.  –9 – (–12) – 4
   = - 9 + 12 - 4
   = 3 - 4
   = - 1
   
3.   6 – 14 + (– 21)
   = -8 -21
   = -29
   
4. –17 + (–23) –( –45)
   =  -17 - 23 + 45
   = -40 + 45
   = 5
   
5.  –23 – 34 – (–76) – 28
   =  -57 + 76 - 28
   = 19 - 28
   =  - 9
   
6.   43 – 29 – 65 – (–83) + 78
   = 14 - 65 + 83 + 78
   =  - 51 + 83 + 78
   = 32 + 78
   = 110
   
7.  –67 – 23 – (–64) + –(62) – 28
   = - 90 + 64 - 62 - 28
   = - 26 - 62 - 28
   =  - 116
   
8.  –34 + (–41) + 69 – (–38) + 98 + (–46)
   =  - 75 + 69 + 38 + 98 - 46
   =  - 6 + 136 - 46
   = 84
   
9.  –96 – (24 – 47) + (38 –( –31)) – ((–17 )– (–54))
   = - 96 - (-23) + 69 - 37
   =  - 73 + 69 - 37
   =  -41
   
10.  1– {2 + [–6 – (2 + (–5)) – (7 –( –3)) +1] – [(–12– 15) +29]}
    = 1 - { 2 + [ - 6 - (-3) - (7 + 3) + 1 ] - [ (- 27) + 29 ] }
    = 1 - { 2 + [ -6 + 3 - (10) + 1 ] - [ 2 ] }
    = 1 - { 2 + [ - 3 - 10 + 1 ] - 2 }
    = 1 - { 2 + [ -12 ] - 2 }
    = 1 - { -10 - 2 }
    = 1 - { - 12 }
    = 13
    
11.  –16 – { –25 – [–34 + (–26 – (–45)) – (–12 –23) ] –15}
    = - 16 - { - 25 - [ - 34 + ( 19 ) - ( - 35 ) ] - 15 }
    = - 16 - { - 25 - [ - 15 + 35 ] - 15 }
    = - 16 - { - 25 - [ 20 ] - 15 }
    = - 16 - { -60 }
    =  44
    
12.   – (23 – 45) – (75 – 34) – (54 – 67) – (–5 – (–12))
    = - ( - 22 ) - ( 41) - ( - 13 ) - ( 7 )
    =  - 19 + 13 - 7
    = - 13
    
13.   –11 – { 23 +[(–23 –56) – (27 – 65)] – [–12 + (–8 –17)}
    = - 11 - { 23 + [ ( - 79 ) - ( - 38 ) ] - [ - 12 + ( - 25 ) ] }
    = - 11 - { 23 + [ - 41 ] - [ - 37 ] }
    = - 11 - { - 18 + 37 }
    = - 11 - 19
    = - 30
    
14.  –16 – [–13 – (25 – 37) + (34 + 32)] – [–26 – (45 –57)]
    = - 16 - [ - 13 - ( - 12 ) + ( 66 ) ] - [ - 26 - ( - 12 ) ]
    = - 16 - [ - 13  + 12 + 66 ] - [ - 26 + 12 ]
    = - 16 - [ 65] - [ - 14 ]
    = - 81 + 14
    =  - 67
    
    

Ver más sobre operaciones combinadas en : https://brainly.lat/tarea/45027569
#SPJ2