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Math Problems
Precalculus
Solve a system of equations in three variables using elimination
Solve the system of equations.
\newline
−
9
x
+
10
y
=
3
-9x + 10y = 3
−
9
x
+
10
y
=
3
\newline
3
x
−
2
y
=
−
9
3x - 2y = -9
3
x
−
2
y
=
−
9
\newline
(____, ____)
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Which equation has the solution
x
=
5
x=5
x
=
5
?
\newline
4
x
−
4
=
−
16
4 x-4=-16
4
x
−
4
=
−
16
\newline
6
x
−
1
=
77
6 x-1=77
6
x
−
1
=
77
\newline
2
x
+
4
=
14
2 x+4=14
2
x
+
4
=
14
\newline
5
x
+
8
=
41
5 x+8=41
5
x
+
8
=
41
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Which equation has the solution
x
=
3
x=3
x
=
3
?
\newline
9
x
−
9
=
126
9 x-9=126
9
x
−
9
=
126
\newline
4
x
−
2
=
−
10
4 x-2=-10
4
x
−
2
=
−
10
\newline
7
x
−
6
=
15
7 x-6=15
7
x
−
6
=
15
\newline
2
x
−
2
=
1
2 x-2=1
2
x
−
2
=
1
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Which equation has the solution
x
=
7
x=7
x
=
7
?
\newline
5
x
+
1
=
−
36
5 x+1=-36
5
x
+
1
=
−
36
\newline
6
x
+
9
=
81
6 x+9=81
6
x
+
9
=
81
\newline
5
x
−
2
=
30
5 x-2=30
5
x
−
2
=
30
\newline
4
x
+
9
=
37
4 x+9=37
4
x
+
9
=
37
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