Question

Actividad 6. Halla el valor de X en cada igualdad:

a) - 4. x – 3 = 13

b) x : (-5) – 1 = 2

c) - 2. X + 7 = - 1

d) x2 = 81

e) √x - 6 = 30

f) ( x – 2)3 = 27

Answer 1

Explicación paso a paso:

a) - 4. x – 3 = 13

-4x - 3 = 13

x = (13 + 3) : (-4)

x = 16 : (-4)

x = - 4

b) x : (-5) – 1 = 2

x = (2 + 1) * (-5)

x = 3 * (-5)

x= - 15

c) - 2. X + 7 = - 1

-2x + 7 = - 1

x = (-1 - 7) : (-2)

x = - 8 : (-2)

x = 4

d) x2 = 81

$x = \sqrt{81}$

x= 9

e) √x - 6 = 30

$x = {(30 + 6)}^{2}$

$x = {36}^{2}$

x = 1296

f) ( x – 2)3 = 27

$x - 2 = \sqrt[3]{27}$

x - 2 = 3

x = 3 + 2

x = 5