Question

-5+(-6)+(-9)-(+7)+7-12=
[-6+(4+2)-(-9)]-(-4)-(+7-5)+(-12)]+-15=
4+{[-7+(3+2)-(-2)]+[(-3)-(+8-8)+(-10)]}+10-3=

Answer 1

Respuesta:

PRIMERO

−5−6−9−7+7−12

=−11−9−7+7−12

=−20−7+7−12

=−27+7−12

=−20−12

=−32

SEGUNDO

−6+4+2−(−9)−(−4)−(7−5)−12−15

=−6+6−(−9)−(−4)−(7−5)−12−15

=0−(−9)−(−4)−(7−5)−12−15

=9−(−4)−(7−5)−12−15

=13−(7−5)−12−15

=13−2−12−15

=11−12−15

=−1−15

=−16

TERCERO

4−7+3+2−(−2)−3−(8−8)−10+10−3

=4−7+5−(−2)−3−(8−8)−10+10−3

=4+−2−(−2)−3−(8−8)−10+10−3

=4+0−3−(8−8)−10+10−3

=4+0−3−0−10+10−3

=4+0+−3−10+10−3

=4+0+−13+10−3

=4+−13+10−3

=−9+10−3

=1−3

=−2

Explicación paso a paso:

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