C because you have to think a bout how to get from y to x
Answer:
I can help but for a price.
Step-by-step explanation:
Answer:

Step-by-step explanation:
<u>Step 1: Combine on the right side
</u>


<u>Step 2: Divide both sides by 90
</u>



Answer: 
Subtract the 12x^2 first.
5x - 4 = 6
Add the four
5x = 10
Then divide the 5 from both sides
X = 2