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Mathematics
Mathematics
Problem
Solve the following system of equations:
3
x
+
2
y
=
12
3x + 2y = 12
3
x
+
2
y
=
12
,
5
x
−
4
y
=
7
5x - 4y = 7
5
x
−
4
y
=
7
. The solution
(
x
,
y
)
(x, y)
(
x
,
y
)
is: a)
(
39
22
,
31
11
)
\left(\dfrac{39}{22},\dfrac{31}{11}\right)
(
22
39
,
11
31
)
b)
(
31
11
,
−
39
22
)
\left(\dfrac{31}{11},-\dfrac{39}{22}\right)
(
11
31
,
−
22
39
)
c)
(
31
11
,
39
22
)
\left(\dfrac{31}{11},\dfrac{39}{22}\right)
(
11
31
,
22
39
)
d)
(
31
11
,
78
11
)
\left(\dfrac{31}{11},\dfrac{78}{11}\right)
(
11
31
,
11
78
)
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