OMG!! How is is that even a maths question, it looks so hard!
Iโm so sorry but I have no clue what that is!
Step 1. Solve the equation for x
Step 2. Find the intersection
Step 3. Find the union -> x = - 8/3
Step 4. The equation has 2 solutions
x1 = -8/3
x2= 16/3