Question

resuelva las ecuaciones dadas
a.
$3 \times - 5 = 13$
b.
$4 \times + 3 = - 13$
c.
$\frac{ \times }{3} = 5$
d.
$\frac{ \times }{2} - 3 = 15$
e.
${ \times }^{2} = 121$
f.
${ \times }^{2} - 4 = 21$


​

Answer 1

Respuesta:

$3x - 5 = 13 \\ 3x = 13 + 5 \\ x = \frac{18}{3} \\ x = 6$

$4x + 3 = - 13 \\ 4x = - 13 - 3 \\ x = \frac{ - 16}{4} \\ x = - 4$

$\frac{x}{3} = 5 \\ x = 5 \times 3 \\ x = 15$

$\frac{x}{2} - 3 = 15 \\ \frac{x}{2} = 15 + 3 \\ x = 18 \times 2 \\ x = 36$

${x}^{2} = 121 \\ x = \sqrt{121} \\ x = 11$

${x}^{2} - 4 = 21 \\ {x}^{2} = 21 + 4 \\ x = \sqrt{25} \\ x = 5$