7) Solve the system of linear equations using elimination by multiplication. S0.4r + 0.5y = 20 10.5 + y = 10 (40, – 100) (100, – 40) no solutions O (- 100, 25) infinite solutions (100, – 25)

College Algebra (MindTap Course List)
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Author:R. David Gustafson, Jeff Hughes
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Chapter6: Linear Systems
Section6.2: Guassian Elimination And Matrix Methods
Problem 86E
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Solve the system of linear equations using elimination by multiplication.

7) Solve the system of linear equations using elimination by multiplication.
S0.4r + 0.5y = 20
10.5 + y = 10
(40, – 100)
(100, – 40)
no solutions
O (- 100, 25)
infinite solutions
(100, – 25)
Transcribed Image Text:7) Solve the system of linear equations using elimination by multiplication. S0.4r + 0.5y = 20 10.5 + y = 10 (40, – 100) (100, – 40) no solutions O (- 100, 25) infinite solutions (100, – 25)
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