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OpenStudy (anonymous):
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OpenStudy (anonymous):
Solve the following system of equations using matrices. 5x + 3y = 46 2x + 5y = 7 (2, 10) (3, 4) (3, 11) (11, -3)
OpenStudy (anonymous):
Gauss elimination on 5x + 3y = 46 2x + 5y = 7 cross multiply by the coefficients of x; e.g., multiply the first by 2 and the 2nd by 5 giving 10x + 6y = 92 10x + 25y = 35 and then subtract the 1st from the 2nd 19y = -57 y = -3 implying (D) is the answer
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