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18 votes
18 votes
Help please I’m on my last attempt with this problem

Help please I’m on my last attempt with this problem-example-1
User Victor Nicollet
by
2.5k points

1 Answer

16 votes
16 votes

From the problem, we have two equations :


\begin{gathered} 2x+3y=-2 \\ -2x+6y=-16 \end{gathered}

Using elimination method by adding the two equations :


\begin{gathered} (2x-2x)+(3y+6y)=-2-16 \\ (0)+9y=-18 \\ 9y=-18 \\ y=(-18)/(9)=-2 \end{gathered}

Substitute y = -2 to the first equation.


\begin{gathered} 2x+3(-2)=-2 \\ 2x-6=-2 \\ 2x=-2+6 \\ 2x=4 \\ x=(4)/(2)=2 \end{gathered}

The answers are :

x = 2 and y = -2

User Tomkay
by
3.1k points
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