Respuesta :

MMMski
Hello!

In order to find the answer to this equation, we must isolate x:

6x + 9 - 16x = -21
9 - 16x = -21 - 6x
9 = -21 - 6x + 16x
9 + 21 = -6x + 16x
30 = 10x

To find the final answer to x, we must divide 30 by 10. 

x = 3

I hope this helps you! Have a great day!
-MMMski