Answer:
Step-by-step explanation:
Answer:
Answer:
(
2
,
−
1
)
Explanation:
The quickest way is to use elimination
3
x
+
4
y
=
2
+
2
x
−
4
y
=
8
−
−
−
−
−
5
x
=
10
⇒
x
=
2
Now substitute into one of the original eqns.
3
×
2
+
4
y
=
2
6
+
4
y
=
2
4
y
=
−
4
⇒
y
=
−
1
check in other eqn.
2
x
−
4
y
=
8
2
×
2
−
(
4
×
−
1
)
=
4
−
−
4
=
4
+
4
=
8
√
solns
(
2
,
−
1
)
Step-by-step explanation:
