<jupyter_start><jupyter_text>**<NAME>**<jupyter_code>import numpy as np
A=np.array([[4,3],[-5,9]]) #creation of matrix A
print(A)
inv_A=np.linalg.inv(A)
print(inv_A)
B=np.array([[20],[26]])
print(B)
X=np.linalg.inv(A).dot(B)
print(X)
X=np.dot(inv_A,B)
print(X)
#PROBLEM
import numpy as np
A=np.array([[4,3,2],[-2,2,3],[3,-5,2]]) #matrix A
print(A)
A_inv=np.linalg.inv(A) #inverse of matrix A
print(A_inv)
B=np.array([[25],[-10],[-4]])#Constants
print(B)
X=np.dot(A_inv,B) #dot product of inversed matrix A and constants to get the missing variables x,y,z
print(X)<jupyter_output>[[ 5.]
 [ 3.]
 [-2.]]
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