Question
Asked Dec 22, 2019
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For Exercise, solve the system by using the inverse of the coefficient matrix.

5x-3y=-20

10x-7y=-50

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Expert Answer

Step 1

Given,

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5х -Зу%3D - 20 =-50

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Step 2

The given system can be written in matrix form as

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AX = B -20 and B= -3 5 where A = 10 -7 -50 ,

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Step 3

Now

...
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|4 =-35+30 = -5 3 -7 adjA =| -10 5 3 -7 1 ¡adjA |4/ |A| -5-10 5

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Algebra

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