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Suppose you know $x+2y=-1$ and $3y-x=-19$. What is $xy$?

 May 3, 2021
 #1
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x = 7, y = -4

 

Tip:

If you don't want to solve the system of equations, simply graph the equations on something like desmos and find the intersection point. The x and  y are your answers

 May 3, 2021

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