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Answer:
Rearrange [1] to get an expression for
x
[
3
]
XXXXX
x
=
3
+
3
y
Substitute the expression for
x
from [3] into [2]
[
4
]
XXXXX
2
(
3
+
3
y
)
+
9
y
=
11
Simplify
[
5
]
XXXXX
6
+
6
y
+
9
y
=
11
[
6
]
XXXXX
15
y
=
5
[
7
]
XXXXX
y
=
1
3
Substitute the value of
y
from [7] into [1]
[
8
]
XXXXX
x
−
3
(
1
3
)
=
3
Simplify
[
9
]
XXXXX
x
=
4
The solution is
(
x
,
y
)
=
(
4
,
1
3
)
Step-by-step explanation: