Answer:
It's Impossible.
Matrix can only be raised to a power if it has same number of rows and columns
Step-by-step explanation:

66.875 = 66 7/8 as a mixed number
Hey! I tried doing this, but there are no like terms??
Answer:
X=-2
Step-by-step explanation:
All steps are shown in the image
R would equal -189, there is step by step in the picture