Systems of Equations
Solve the following system of equations by any method. Write your answers as an Ordered Pair. If infinitely many solutions exist, enter oo. If no solution exists, enter
D
N
E
\displaystyle {D}{N}{E}
D
N
E
System of Equations
Solution
x
+
8
y
=
−
7
\displaystyle {x}+{8}{y}=-{7}
x
+
8
y
=
−
7
−
x
+
5
y
=
−
6
\displaystyle -{x}+{5}{y}=-{6}
−
x
+
5
y
=
−
6
7
x
+
6
y
=
50
\displaystyle {7}{x}+{6}{y}={50}
7
x
+
6
y
=
50
21
x
+
18
y
=
−
3
\displaystyle {21}{x}+{18}{y}=-{3}
21
x
+
18
y
=
−
3
3
x
+
6
y
=
24
\displaystyle {3}{x}+{6}{y}={24}
3
x
+
6
y
=
24
−
3
x
+
4
y
=
−
4
\displaystyle -{3}{x}+{4}{y}=-{4}
−
3
x
+
4
y
=
−
4
3
x
−
6
y
=
6
\displaystyle {3}{x}-{6}{y}={6}
3
x
−
6
y
=
6
−
9
x
+
18
y
=
−
18
\displaystyle -{9}{x}+{18}{y}=-{18}
−
9
x
+
18
y
=
−
18
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