Respuesta :
use distributed property first
6*7x= 42x
6*9= 54
42x-54
add it to the equation
42x-54+15
combine like terms
-54+15 = -39
42x-39 is your answer
6*7x= 42x
6*9= 54
42x-54
add it to the equation
42x-54+15
combine like terms
-54+15 = -39
42x-39 is your answer