Question

Ayúdenme a encontrar el valor de x

Answer 1

1) 37/3 , 2) 23/20, 3) -67, 4) -13/7, 5) 17/14, 6) -14/3, 7) 6, 8) -32/15

Explicación paso a paso:

 

1) (3x + 5)/9 = (2x - 6)/4

4 * (3x + 5) = (2x - 6) * 9

12x + 20 = 18x - 54

12x - 18x = -54 - 20

-6x = -74

x = 37/3

 

2) (4x + 5)/3 = 8x - 6

4x + 5 = 24x - 18

4x - 24x = -18 - 5

-20x = -23

x = 23/20

   

3) (8x - 4)/9 = x + 7

8x - 4 = 9x + 63

8x - 9x = 63 + 4

-x = 67

x = -67

   

4) 3/(x - 5) = 2/(3x + 1)

9x + 3 = 2x - 10

9x - 2x = -10 - 3

7x = -13

x = -13/7

   

5) (3x + 6)/(4x - 1) = 5/2

6x + 12 = 20x - 5

6x - 20x = -5 -12

-14x = -17

x = 17/14

   

6) (9x + 6)/4 = (3x - 4)/2

18x + 12 = 12x - 16

18x - 12x = -16 - 12

6x = -28

x = -14/3

 

7) (6x - 4)/2 = 9x - 3

6x - 4 = 18x - 6

6x - 18x = -6 + 4

-12x = -2

x = 6

   

8) (9x + 4)/(3x - 5) = 4/3

27x + 12 = 12x - 20

27x - 12x = -20 - 12

15x = -32

x = -32/15