import numpy as np
x=np.array([[1,2,3],[4,7,8],[9,10,12]])
y=np.array([[9,4,5],[11,16,66],[18,2,4]])
print("x=")
print(x)
print("y=")
print(y)
print("x+y=")
print(np.add(x,y))
print("x-y=")
print(np.subtract(x,y))
print("x*y=")
print(np.matmul(x,y))