What is the first step to solving the system below using the elimination method?
{
6
x
+
3
y
=
−
2
−
18
x
+
4
y
=
5
\displaystyle {\left\lbrace\begin{array}{c} {6}{x}+{3}{y}=-{2}\\-{18}{x}+{4}{y}={5}\end{array}\right.}
{
6
x
+
3
y
=
−
2
−
18
x
+
4
y
=
5
multiply by -1
add the equations
multiply the top equation by 3
solve for y
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