SOLUTION: Solve, using linear combination. 3x + y = 4 2x + y = 5

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Question 829473: Solve, using linear combination.
3x + y = 4
2x + y = 5

Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
1.
2.
Subtract eq. 2 from eq. 1 (or form a linear combination of eq. 1 and (-1)*eq. 2),


Then use either equation to solve for y.



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