Question

poderia me ajudar 9-4x-4=x+7-1

Answer 1

-4x-x=7-1-9+4
-3x=1 . (-1)
3x=-1
x=-1/3

Answer 2

9 - 4x - 4 = x + 7 - 1
- 4x - x = 7 - 1 - 9 + 4
- 5x = 1 .(-1)
5x = - 1
x = - 1/5