Respuesta :

Answer:

Step-by-step explanation:

So first we combine like terms on the left

1-7=-6

then we have

-7x-6=15

next we add 6 both sides

-7x-6=15

   +6   +6

-7x=21

then we divide -7 each side

we get

x=-3

Answer:

-3

Step-by-step explanation:

1) first combine all the like terms(terms with same variables or terms without any variable) together

1-7=-6

-6-7x=15

add 6 on both sides to remove it

-7x=21

divide both sides by -7

x=-3

Hope this helps