|Bb Bb Bb Bb Bb Bb Bb Bb Bb Bb Bb / Group 1 X C File | C:/Users/Abdifatah/Downloads/MATH1722_Final_Exam_2021_01.pdf.pdf Sign in | | V Draw 2 | | Read aloud + 13 of 20| | ED O 8. Consider the system of linear equations O X1 + 12 - X3 = 4, X1 - 212 + 3x3 = -6, + 2x1 + 3.12 + 13 = 7. a) Write the system of linear equations as a matrix equation and hence identify the coef- ficient matrix A, the variable vector x and the constant vector b. [1 mark] b) Solve the system of linear equations by using the Gauss-Jordan elimination method on the augmented matrix [A | b]. [3 marks] CO3 13.C Q Search ENG 3:47 AM Mostly cloudy US 6/07/2023 3|Bb Bb Bb Bb Bb Bb Bb Bb Bb Bb Bb / Group 1 X C File | C:/Users/Abdifatah/Downloads/MATH1722_Final_Exam_2021_01.pdf.pdf Sign in | | V Draw ~ 2 | | Read aloud + 14 of 20| | ED O MATH1722 FIRST SEMESTER EXAMINATION 2021 14 O c) Solve the system of linear equations by first finding A~ [Hint: your answer should be the same as Part b.] [4 marks] + CO3 13.C Q Search ENG 3:47 AM Mostly cloudy US 6/07/2023 3