16
divide 12 by 3 since its 3/4 of the whole thing so 1/4=4
Answer:
Step-by-step explanation:
OPTION 3
Answer:
6551
Step-by-step explanation:
x=4
9 (4) - 10
9x9x9x9= 6561
6561-10= 6551
Hello!
Answer: 
Step-by-step explanation:

Multiply by 3 from both sides of the equation.

Refine.

Add by 2 from both sides of the equation.

Simplify.

Divide by 21 from both sides of the equation.

Simplify.

Hope this helps!
Thank you for posting your question at here on brainly.
-Charlie
Answer:
could you type that again? I don't understand