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SAT
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Math
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Linear Equations
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Q)
Which of the following set of linear equation has a unique solution :
a
)
4
x
+
2
y
+
6
=
0
a
n
d
12
x
−
6
y
+
7
=
0
b
)
4
x
+
2
y
+
6
=
0
a
n
d
12
x
+
6
y
+
18
=
0
c
)
4
x
+
2
y
−
6
=
0
a
n
d
−
12
x
−
6
y
+
18
=
0
d
)
−
4
x
+
2
y
+
6
=
0
a
n
d
12
x
+
6
y
+
7
=
0
Share
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