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Consider the system of equations
        5x + y = 31

3x + 4y = -37

 

Take your expression for y from part (a), and substitute it into the second equation. Solve for x and y.
 

Enter your answer as the ordered pair(x,y)

 Jul 19, 2021
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y = 31 - 5x. Sub that into second equation we get 3x + 124 - 20x = -37. -17x = -161, so x = 161/17. Sub that into y = 31 - 5x we get y = 31-5*161/17 = 31 - 805/17 = -278/17. 

 

(161/17, -278/17)

 Jul 19, 2021

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