Solve the following systems of linear equations using the substitution method. 1. -4x + 3y = 15 2x + 4y = -10   2. 6x + y =12 12x +2y = -1   3. -x -4y = -1 -2x +3y =9

College Algebra (MindTap Course List)
12th Edition
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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 following systems of linear equations using the substitution method.

1.

-4x + 3y = 15

2x + 4y = -10

 

2.

6x + y =12

12x +2y = -1

 

3.

-x -4y = -1

-2x +3y =9

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