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Solve the system of equations algebraically.x + 3y = -14-x + 3y = - 10

User Marybeth
by
6.7k points

1 Answer

6 votes

Answer:

x=-2, y=-4.

Step-by-step explanation:

Given the system of equations:


\begin{gathered} x+3y=-14 \\ -x+3y=-10​ \end{gathered}

Add the two equations to eliminate x:


\implies6y=-24

Divide both sides by 6 to solve for y:


\begin{gathered} y=-(24)/(6) \\ y=-4 \end{gathered}

Next, substitute y=-4 into any of the equations to solve for x:


\begin{gathered} x+3y=-14 \\ x+3(-4)=-14 \\ x-12=-14 \\ x=-14+12 \\ x=-2 \end{gathered}

The solution to the system is: x=-2, y=-4.

User Neil Cresswell
by
6.6k points
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