Question

Resolva as equações equações seguir:

Answer 1

x - 2x-1/3 = x -1/5 (mmc) =15

15x - 10x - 5 = 3x -3

15x -10x -3x = -3 +5

2x=2

x = 1

c)  3x - 2*(x - 5 ) + 3x - 5/2 =0

3x - 2x + 10 + 3x - 5 /2 = 0 mmc = 2

6x - 4x + 20 + 3x - 5 = 0

5x = -15

x = -3

d) 3*(x +2)/5 -3x +1/4 = 2 mmc = 20

60 ( 4x + 8 ) -15x +5 = 40

240x + 480 -15x + 5 = 40

225x = 40 -480 -5

x= -445/225

x = -89/45
 
e) 2x + 2/3 + 3x - 5/2 = 9  mmc = 6

4x + 4 + 9x - 15 = 54

13x = 54 -4 + 15

x = 65/13

Answer 2

Resposta:

-2x-1/3 = x -1/5 (mmc) =15

15x - 10x - 5 = 3x -3

15x -10x -3x = -3 +5

2x=2

x = 1

c)  3x - 2*(x - 5 ) + 3x - 5/2 =0

3x - 2x + 10 + 3x - 5 /2 = 0 mmc = 2

6x - 4x + 20 + 3x - 5 = 0

5x = -15

x = -3

d) 3*(x +2)/5 -3x +1/4 = 2 mmc = 20

60 ( 4x + 8 ) -15x +5 = 40

240x + 480 -15x + 5 = 40

x= -445/225

x = -89/45

 

e) 2x + 2/3 + 3x - 5/2 = 9  mmc = 6

4x + 4 + 9x - 15 = 54

13x = 54 -4 + 15

x = 65/13