Question

a) {2 – 6 + [ 9 + ( - 7 ) + 1]}=
b) [ - 1 + 10 - ( 21 ) ] + 5 =
c) {33 - [12 + ( 41 – 50 ) + 7 ]- 2} =
d) {72 – 62 + [ 22 - ( 1+ 17 ) ] + 11 }

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Answer 1

Respuesta:

a) - 1

b) - 7

c) - 54

d) 25

Explicación paso a paso:

a) {2 – 6 + [ 9 + ( - 7 ) + 1]}=

{2 - 6 + [ 9 - 7 + 1 ] }

{2 - 6 + 3 }

{ - 1 }

b) [ - 1 + 10 - ( 21 ) ] + 5 =

[ - 1 + 10 - 21 ] + 5 =

[ - 12 ] + 5 =

- 7

c) {33 - [12 + ( 41 – 50 ) + 7 ]- 2} =

{33 - [12 - 90 + 7 ]- 2} =

{33 - [ 78 + 7 ]- 2} =

{ - 54 }

d) {72 – 62 + [ 22 - ( 1+ 17 ) ] + 11 }

{72 – 62 + [ 22 - 18 ] + 11 }

{72 – 62 + 4 + 11 }

{ 25 }