Solve the system by substitution or elimination.
{
−
2
x
−
7
y
=
27
y
=
6
x
−
29
\displaystyle {\left\lbrace\begin{array}{ccccc} -{2}{x}&-&{7}{y}&=&{27}\\&&{y}&=&{6}{x}-{29}\end{array}\right.}
{
−
2
x
−
7
y
y
=
=
27
6
x
−
29
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