Respuesta :

Answer:

x = - 3

Step-by-step explanation:

Given

12x + 7x = 5x - 42, that is

19x = 5x - 42 ( subtract 5x from both sides )

14x = - 42 ( divide both sides by 14 )

x = - 3

Answer:

X= -21/2, Please vote Brainliest.

Step-by-step explanation:

9x=5x-42

9x-5x=5x-42-5x

4x=-42

4x/4= -42/4

X= -21/2

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