Question

a- (8-3+6-4) + (-5-4-3+6) b- (-8-3) + [-(7+8-12) - (-6-4+9)]

c- {[12-3+(-8-3)] - [ 3-(-6-8+5)]} d- -6-{-4+[-5+3-(-7-4)+9]-6}

e- 20-(-4+5-8) + [-7+(5-8)+4-9] f- -13-{[-12+4)-[-5-(-6-3)]+9

Answer 1

Respuesta:

(8-3+6-4) + (-5-4-3+6) = b- (-8-3) + [-(7+8-12) -

(5+2) + (-6) = 11+ (-3 +1)

11+(-2)=9

7- 6=1 (-6-4+9)]

( -10 +9)

c- {[12-3+(-8-3)] - [ 3-(-6-8+5)]}

{[9+(-11)] - [3-9]}

[9-11] - 6

2-6=-8

d)-6-{-4+[-5+3-(-7-4)+9]-6}

-6+4+[2+(-11)+9]-6}

-2+[(-8)+9]-6}

(-2-8+9)

1-6= 5

e- 20-(-4+5-8) + [-7+(5-8)+4-9]

20+(-9)+[-7+(-3)+4-9]

11+[-7-3+4-9]

11+(-15)

-3

f- -13-{[-12+4)-[-5-(-6-3)]+9

-13-((-8)-[-5-(-6-3)]+9

-13+8+5-9)

-13+8-4

-9