The answer is: x= 2
First apply PEMDAS
2(3x + 3)=8x+2
6x + 6 = 8x + 2
Subtract: 8x - 6x ; 6 - 2
4/2
x=2
The real and actual correct answer is B because x on both of the equations equal 0.5
Answer:
See below.
Step-by-step explanation:
First, use the co-function identity:
We can turn the second term into cosine:
Substitute:
Now, use the sum to product formulas. We will use the following:
Substitute:
Use the even-odd identity:
Therefore:
Replace the second term with the original term:
Proof complete.
The answer to this problem is 1 5/12