Question

4. Resuelve estas operaciones.
a) (-3) - (+5)-(-4)

b) 6-(-7) - (-3+ (-2)-(-5)]

c)-[-6 - (-7)] - [(-9) - (-2) - 5]​

Answer 1

Explicación paso a paso:

c)

−[−6−(−7)]−[(−9)−(−2)−5]

−(−6+7)−(−9−(−2)−5)=11

−1−(−9−(−2)−5)=11

−1−(−9+2−5)=11

−1−(−7−5)=11

−1−(−12)=11

−1+12=11

11

b)

6−(−7)−(−3+(−2)−(−5)]

6+7−(−3−2−(−5))=13

13−(−3−2−(−5))=13

13−(−5−(−5))=13

13−(−5+5)=13

13−0=13

13

a)

(−3)−(+5)−(−4)

−8−(−4)=−4

−8+4=−4

−4

Answer 2

Respuesta:

a) (-3) - (+5) - (-4)

-3 -5 +4

-8 + 4 = -4

b)[ 6- (-7)] - [ (-9) - (-2) -(-5)]

[(6+7)]- [( -9 + 2+5)]

[(13)]- [(-3)]

13- (-3)

13+3= 16

c) -[-6-(-7)] - [(-9) - (-2) - 5 )]

-[-6+7] - [-9 + 2 - 5]

-(1) - [ -12]

-1 +12= 11