I need help with this problem I having a lot of trouble with this please help

Answer:
false statement
Step-by-step explanation:
9x + 3x - 10 = 3(3x + x)
9x + 3x - 10 = 9x + 3x
12x - 10 = 12x
(subtract 12x from both sides)
-10 = 0 (false)
-10 is not = to 0