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