Question

Favor ayudarme a resolver estos despejes​

Answer 1

Respuesta:

7)  x = 13

8)  x = 5

9)  x = 13

Explicación paso a paso:

7)  1 - ( x - 5 ) / 4 - ( x - 3 ) / 10 + ( x + 3 ) / 8 = 0

- ( x - 5 ) / 4 - ( x - 3 ) / 10 + ( x + 3 ) / 8 = - 1     convertimos a 40avos

- 10 ( x - 5 ) / 40 - 4 ( x - 3 ) / 40 + 5 ( x + 3 ) / 40 = - 1

( - 10x + 50 - 4x + 12 + 5x + 15 ) / 40 = - 1

( - 10x + 50 - 4x + 12 + 5x + 15 ) = ( - 1 ) ( 40 )

- 9x + 77 = - 40

- 9x = - 40 - 77

- 9x = - 117

x = - 117 / - 9

x = 13

8)  ( 3x - 7 ) / 12 = ( 2x - 3 ) / 6 - ( x - 1 ) / 8

( 3x - 7 ) / 12 - ( 2x - 3 ) / 6 + ( x - 1 ) / 8 = 0   convertimos a 48avos

4 ( 3x - 7 ) / 48 - 8 ( 2x - 3 ) / 48 + 6 ( x - 1 ) / 48 = 0

( 12x - 28 - 16x + 24 + 6x - 6 ) / 48 = 0

12x - 28 - 16x + 24 + 6x - 6 = ( 0 ) ( 48 )

2x - 10 = 0

2x =  10

x = 10/2

x = 5

9) x + 5 = 5 + 13

x + 5 = 18

x = 18 - 5

x = 13