Question

Calcula. (SOLUCIONES: a= +7 b= -2 c= +5 d= +8 ) a) (5 – 7) – [(–3) + (–6)] =
b) (–8) + [(+7) – (– 4) + (–5)] =
c) (+9) – [(+3) – (3 – 12) – (+8)] =
d) [(+6) – (–8)] – [(– 4) – (–10)] =
porfa ayudemen con esto

Answer 1

Respuesta:

a) (5 - 7) - [(-3) + (-6)] =

$=-2-\left[\left(-3\right)+\left(-6\right)\right]\\=-2-\left(-9\right)\\=7$

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b) (-8) + [(+7) - (- 4) + (-5)] =

$=\left(-8\right)+6\\=-2$

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c) (+9) - [(+3)- (3 -12) - (+8)] =

$=\left(9\right)-4\\=5$

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d) [(+6) - (-8)] - [(- 4) - (-10)] =

$=14-\left[\left(-4\right)-\left(-10\right)\right]\\=14-6\\=8$

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