Question

ayudenme porfavor no le entiendo a estas operaciones
+ 45 – 75 + 69 – 59 =
- 45 + 89 – 95 + 68 =
+ 56.56 – 45.89 + 12.57 – 48.78 =
- 45 + 69.89 – 45.8 =
+ 45.78 – 45.9 + 48.7 =
+ 78 – 125 + 156 – 78 =
- 47 + 98 – 128 + 165 =
+ 69 – 96 + 89 – 99 =
+ 12.56 - 89.78 - 78.98 + 56.78 =
- 45.78 + 98.78 – 78.89 + 78.5 =

Answer 1

Respuesta:

Espero ahora las comprendas mejor

Explicación paso a paso:

Organiza los que son sumas y los que son restas.

+ 45 – 75 + 69 – 59 =

(45 + 69) (- 75 - 59) =

114 - 134 = -20

- 45 + 89 – 95 + 68 =

( 89 + 68 ) ( -45 - 95) =

157 - 140 = 17

+ 56.56 – 45.89 + 12.57 – 48.78 =

( 56.56 + 12.57 ) ( - 45.89 - 48.78 =

69.13 - 94.67 = - 25.54

- 45 + 69.89 – 45.8 =

69.89 (- 45 - 45.9 ) =

69.89 - 90.9 = -21.01

+ 45.78 – 45.9 + 48.7 =

(45.78 + 48.7 ) -45.9 =

94.48 -45.9 = 48.58

+ 78 – 125 + 156 – 78 =

( 78 + 156 ) ( -156 - 78 ) =

234 - 234 = 0

- 47 + 98 – 128 + 165 =

( 98 + 165 ) ( - 47 - 165 ) =

263 - 212 = 51

+ 69 – 96 + 89 – 99 =

( 69 + 89 ) ( - 96 - 99 )

158 - 195 = -37

+ 12.56 - 89.78 - 78.98 + 56.78 =

( 12.56 + 56.78 ) ( - 89.78 - 78.98 )

69.34 - 168.76 = -99.42

- 45.78 + 98.78 – 78.89 + 78.5 =

( 98.78 + 78.5 ) ( - 45.78 - 78-89 ) =

177.28 - 124.67 = 52.61