Suprimí paréntesis, corchetes y llaves... luego resolvé prestando atención a los
signos.
a) 20 – ( 10 – 8 + 9 ) + ( – 23 ) =
b) – [ – ( 7 – 11 ) + ( – 5 – 1 + 8 ) – 7 ] =
c) 5 + { – 12 – [ – 4 – 9 + ( 10 – 18 – 22) – 4 ] } =
d) – { 33 + [ – 15 + ( – 8) – ( 4 – 8 ) + 2 ] – 6 } – 3=
Respuestas a la pregunta
Explicación paso a paso:
a) 20 – ( 10 – 8 + 9 ) + ( – 23 ) =
20 – ( 10 – 8 + 9 ) – 23 =
20 – ( 19– 8 ) – 23 =
20 – ( 11 ) – 23 =
20 – 11 – 23 =
20 – 34= - 14
b) – [ – ( 7 – 11 ) + ( – 5 – 1 + 8 ) – 7 ] =
– [ – ( – 4 ) + ( – 5 – 1 + 8 ) – 7 ] =
– [ 4 + ( – 5 – 1 + 8 ) – 7 ] =
– [ 4 + ( – 6 + 8 ) – 7 ] =
– [ 4 + ( 2 ) – 7 ] =
– [ 6– 7 ] =
– [ -1 ] = 1
c) 5 + { – 12 – [ – 4 – 9 + ( 10 – 18 – 22) – 4 ] } =
5 + { – 12 – [ – 4 – 9 + ( 10 - 40) – 4 ] } =
5 + { – 12 – [ – 4 – 9 + ( - 30) – 4 ] } =
5 + { – 12 – [ – 13 + ( - 30) – 4 ] } =
5 + { – 12 – [ – 13 - 30 – 4 ] } =
5 + { – 12 – [ – 47 ] } =
5 + { – 12 + 47 } =
5 + { 35} =
5 + 35 = 40
d) – { 33 + [ – 15 + ( – 8) – ( 4 – 8 ) + 2 ] – 6 } – 3=
– { 33 + [ – 15 + (– 8) – ( – 4) + 2 ] – 6 } – 3=
– { 33 + [ – 15 + (– 8) +4 + 2 ] – 6 } – 3=
– { 33 + [ – 15 + (– 8) +6] – 6 } – 3=
– { 33 + [ – 15 – 8) +6] – 6 } – 3=
– { 33 + [ – 24 +6] – 6 } – 3=
– { 33 + [ – 18 ] – 6 } – 3=
– { 33 – 18 – 6 } – 3=
– { 33 – 24 } – 3=
– {9} – 3=
– 9 – 3= -12