\left\{ \begin{array} { l } { 6 x + 2 y = 30 } \end{array} \right.
Solve for x
x=-\frac{y}{3}+5
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6x=30-2y
Subtract 2y from both sides.
\frac{6x}{6}=\frac{30-2y}{6}
Divide both sides by 6.
x=\frac{30-2y}{6}
Dividing by 6 undoes the multiplication by 6.
x=-\frac{y}{3}+5
Divide 30-2y by 6.
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