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Use elimination to solve eachsystem of equations2x - y = 165x + 3y = -4

User Rivalus
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1 Answer

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To solve by elimination, we add 3 times the first equation to the second one, and get:


6x-3y+5x+3y=48-4.

Simplifying the above equation, we get:


11x=44.

Dividing by 11, we get:


x=(44)/(11)=4.

Substituting x=4 in the first equation, and solving for y, we get:


\begin{gathered} 2(4)-y=16, \\ 8-16=y, \\ -8=y\text{.} \end{gathered}

Answer:


\begin{gathered} x=4, \\ y=-8. \end{gathered}

User Myles J
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