Question

Resuelve las siguientes ecuaciones:

1) 2 + x = 1/2


2) x -5/4 = 2/5


3) x + 3/7= -1/2

Answer 1

$1)2 + x = \frac{1}{2} \\ x = \frac{1}{2} - 2 \\ x = \frac{1}{2} - \frac{4}{2} \\ x = - \frac{3}{2}$

$2)x - \frac{5}{4} = \frac{2}{5} \\ x = \frac{2}{5} + \frac{5}{4} \\ x = \frac{8}{20} + \frac{25}{20} \\ x = \frac{33}{20}$

$3)x + \frac{3}{7} = - \frac{1}{2} \\ x = - \frac{1}{2} - \frac{3}{7} \\ x = ( - \frac{1}{2} ) + ( - \frac{3}{7} ) \\ x = ( - \frac{7}{14} ) + ( - \frac{6}{14} ) \\ x = - \frac{13}{14}$