Question

7. Resuelve los siguientes ejercicios: (a) -5-(3-2)+4-(-2+6)-(-4)-(+6) b) 2-(-5-4)-(-6) (-1+3)-(+4)-(+2) c) (-6) (-2)-(-3) (-1-2)-(-5+1)-(-4-2) d) -2 (3-5)+4-(-1+3)+10 e) -2-(+7)-(+6)-(-3)+(+2)-(-9)​

Answer 1

Respuesta:

(a) -5-(3-2)+4-(-2+6)-(-4)-(+6)

$-5-\left(3-2\right)+4-\left(-2+6\right)-\left(-4\right)-\left(+6\right)\\\\=-5-1+4-\left(-2+6\right)-\left(-4\right)-\left(+6\right)\\=-5-1+4-4-\left(-4\right)-\left(6\right)\\\\=-8$

b) 2-(-5-4)-(-6) (-1+3)-(+4)-(+2)

$2-\left(-5-4\right)-\left(-6\right)\left(-1+3\right)-\left(4\right)-\left(+2\right)\\\\=17=2-\left(-9\right)-\left(-6\right)\cdot \:2-\left(4\right)-\left(2\right)\\\\=17$

c) (-6) (-2)-(-3) (-1-2)-(-5+1)-(-4-2)

$\left(-6\right)\left(-2\right)-\left(-3\right)\left(-1-2\right)-\left(-5+1\right)-\left(-4-2\right)\\\\=\left(-6\right)\left(-2\right)-\left(-3\right)\left(-3\right)-\left(-4\right)-\left(-4-2\right)\\\\=12-\left(-3\right)\left(-3\right)-\left(-4\right)-\left(-6\right)\\\\=12-9-\left(-4\right)-\left(-6\right)\\\\=13$

d) -2 (3-5)+4-(-1+3)+10

$-2\left(3-5\right)+4-\left(-1+3\right)+10\\\\=-2\left(-2\right)+4-\left(-1+3\right)+10\\\\=4+4-2+10\\\\=16$

e) -2-(+7)-(+6)-(-3)+(+2)-(-9)​

$=-9-\left(+6\right)-\left(-3\right)+\left(+2\right)-\left(-9\right)\\\\=-12+\left(2\right)-\left(-9\right)\\\\=-10+9\\\\=-1$