Question

resolva as equações
1) 2x-1/2 =3,5x +5

2) 2/2- 1x/3 =1/5+x/2

Answer 1

1) 2x - $\frac{1}{2}$ = 3,5x + 5
   $\frac{4x}{2} - \frac{1}{2} = \frac{7x}{2} + \frac{10}{2}$
   4x - 7x = 10 + 1
   -3x = 11 .(-1)
    x = - $\frac{11}{3}$

2) $\frac{2}{2} - \frac{1x}{3} = \frac{1}{5} + \frac{x}{2}$
    1 - $\frac{1x}{3} = \frac{1}{5} + \frac{x}{2}$
    $\frac{30}{30} - \frac{10x}{30} = \frac{3}{30} + \frac{15x}{30}$ 
     30 - 10x = 3 +15x
      -10x -15x = 3 - 30
      -25x = -27 . (-1)
       x = $\frac{27}{25}$