Three lines intersect at a common point. In the figure below, m∠1=x°, m∠2=2x°, and m∠3=75° Which equations can be used to determine the value of x? Select all that apply.

B,D,E should be correct

Step-by-step explanation:

It is blindness and randomization

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.