Question

Resolva as seguintes equações a)x_2- x_4=1_2

Answer 1

$\frac{x}{2}-\frac{x}{4} = \frac{1}{2}$

mmc (2,4) = 4

$\frac{2x-x}{4} = \frac{2}{4}$

$2x-x=2$

$x = 2$

Prova real::

$\frac{2}{2} - \frac{2}{4} = \frac{1}{2}$

$1- \frac{1}{2} = \frac{1}{2}$

$\frac{2- 1}{2} = \frac{1}{2}$

$\frac{1}{2} = \frac{1}{2}$