How to solve the system of equations using Numpy library in Python?

e.g. for the following system of equations, x1=2, x2=1, x3=2

4x1 + 5x2 + 6x3 = 25

2x1 + 3x2 + 4x3 = 15

4x1 + 5x2 + 2x3 = 17

e.g. for the following system of equations, x1=2, x2=1, x3=2

4x1 + 5x2 + 6x3 = 25

2x1 + 3x2 + 4x3 = 15

4x1 + 5x2 + 2x3 = 17