Question

RESOLVER LAS SIGUIENTES OPERACIONES COMBINADAS DE SUMAS Y RESTAS DE NÚMEROS ENTEROS
a) (+5) + (-3) - (-8) - (+7 ) - (+3) + (-2) - (-7) - (+2) + (-18) + (21) - (3) – ( -11) + (-15)
b) (4) + (- 6) – ( 3) – ( 8) + (7) + (-19) – (-7) – (2) - (-16 ) + ( 4) – ( 18) – (9) + (-3)
c) (-3)+( - 9) – ( 2) – ( 3) + ( -8) + (11) – (14) + ( -4) – (9 ) – ( 7) + (9) – (- 1) + (-9 ) – ( 21)

Answer 1

Respuesta:

a) (+5) + (-3) - (-8) - (+7 ) - (+3) + (-2) - (-7) - (+2) + (-18) + (21) - (3) – ( -11) + (-15) =

5-3+8-7-3-2+7-2-18+21-3+11-15 =

52-53 = -1

b) (4) + (- 6) – ( 3) – ( 8) + (7) + (-19) – (-7) – (2) - (-16 ) + ( 4) – ( 18) – (9) + (-3) =

4-6-3-8+7-19+7-2+16+4-18-9-3 =

38-68 = -30

c) (-3)+( - 9) – ( 2) – ( 3) + ( -8) + (11) – (14) + ( -4) – (9 ) – ( 7) + (9) – (- 1) + (-9 ) – ( 21) =

-3-9-2-3-8+11-14-4-9-7+9+1-9-21 =

21-89 = -68