Question

resuelve las siguientes ecuaciones con denominador ayuda por fa :(
$\frac{5x}{2} -7= \frac{1}{7}$
$x+2+ \frac{x}{3} =2( \frac{x}{3} +16)$
$6 \frac{x}{5} -7=- \frac{x}{5}$

Answer 1

5x/2 - 7 = 1/7

 5x - 14
------------ = 1/7
      2

(5x - 14)/2 = 1/7
7 (5x - 14) = 2 (1)
35x - 98 = 2
35x = 2 + 98
35x = 100
x = 100/35
x = 20/7-----------Respuesta



x + 2 + x/3 = 2 (x/3 + 16)
(3x + x + 3 * 2)/3 = 2 (x + 48)/3
(4x + 6)/3 = 2 (x + 48)/3
(4x + 6)/3 = (2x + 96)/3
3 (4x + 6) = 3 (2x + 96)
12x + 18 = 6x + 288
12x - 6x = 288 - 18
6x = 270
x = 270/6
x = 45-----------Respuesta 


6x/5 - 7 = - x/5
(5 * - 7 + 6x)/5 = - x/5
(- 35 + 6x)/5 = - x/5
5 (- 35 + 6x) = 5 (- x)
- 175 + 30x = - 5x
30x + 5x = 175
35x = 175
x = 175/35
x = 5---------Repuesta