Question
Solve each system by substitution.$$\begin{array}{l}18 x+6 y=-66 \\12 x+4 y=-19\end{array}$$
Step 1
Let's solve the first equation for $y$. The first equation is $18x + 6y = -66$. We can divide every term by $6$ to simplify the equation, which gives us $3x + y = -11$. Solving for $y$ gives us $y = -3x - 11$. Show more…
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