Solve the following question

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1. Solve the following system of 4 equations with 4 unknowns by hand.

x1 + x3 = 25 x2 + x3 = 18 x1 + x2 = 23 x3 + x4 = 15

2. Write the system in the previous problem in matrix form and solve it.

 

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Reference no: EM13876630

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