Question

8) Resuelve las siguientes operaciones
a) (-7)2 + (-5)*90 -
b) (-3)* -(-7). (+4)*+ 14
e) 199-81-(-6) 5°
d) 5.(-2) + (-3)+ 4* -(-7) –
e) 5.(-2):2+(-3):3-
D(-2-3). (6+5)-(8-6)* =
8) 82+(-5)-(-3).(-2)-​

Answer 1

LETRA A:

$\left(-7\right)\cdot \:2+\left(-5\right)\cdot \:90\\\\=-14+\left(-5\right)\cdot \:90\\\\=-14-450\\\\=-464$

LETRA B:

$\left(-3\right)\left(-\left(-7\right)\right)\left(4\right)+14\\\\=-3\cdot \:7\cdot \:4+14\\\\=-84+14\\\\=-70$

LETRA C:

$199-81-\left(-6\right)\cdot \:5\\\\=199-81-\left(-30\right)\\\\=148$

LETRA D:

$5\left(-2\right)+\left(-3\right)+4\left(-\left(-7\right)\right)\\\\=5\left(-2\right)+\left(-3\right)+4\cdot \:7\\\\=-10+\left(-3\right)+4\cdot \:7\\\\=-10+\left(-3\right)+28\\\\=15$

LETRA E:

$5\left(-2\right)\div \:2+\left(-3\right)\div \:3\\\\=-5+\left(-3\right)\div \:3\\\\=-5-1\\\\=-6$

LETRA F:

$\left(-2-3\right)\left(6+5\right)-\left(8-6\right)\\\\=-5\left(6+5\right)-\left(8-6\right)\\\\=-5\cdot \:11-\left(8-6\right)\\\\=-5\cdot \:11-2\\\\=-55-2\\\\=-57$

LETRA G:

$82+\left(-5\right)-\left(-3\right)\left(-2\right)\\\\=82+\left(-5\right)-6\\\\=71$

Espero que te sirva, salu2 desde Perú!!! ✨❤

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