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Byju's Answer
Standard X
Mathematics
Elimination Method of Finding Solution of a Pair of Linear Equations
If -2x=4y+6...
Question
If
−
2
x
=
4
y
+
6
and
2
(
2
y
+
3
)
=
3
x
−
5
, w
hat is the solution
(
x
,
y
)
to the system of equations above?
Open in App
Solution
The given set of equations are,
−
2
x
=
4
y
+
6.....
(
i
)
and
2
(
2
y
+
3
)
=
3
x
−
5.......
(
i
i
)
from (i)
−
2
x
=
4
y
+
6
⇒
2
x
+
4
y
=
−
6......
(
i
i
i
)
And,from (ii)
2
(
2
y
+
3
)
=
3
x
−
5
⇒
4
y
+
6
=
3
x
−
5
⇒
3
x
−
4
y
=
11.......
(
i
v
)
adding (iii) and (iv)
5
x
=
5
⇒
x
=
1
from (iii)
2
×
1
+
4
y
=
−
6
⇒
2
+
4
y
=
−
6
⇒
4
y
=
−
8
⇒
y
=
−
2
Therefore, the solution to the given system of the equations is
(
1
,
−
2
)
.
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0
Similar questions
Q.
2(2y + 3) = 3x - 5 ;
-2x = 4y + 6
Consider the above system of equations. Which of the following solutions satisfy the sytem ?
Q.
Given,
3
x
+
4
y
=
−
23
and
2
y
−
x
=
−
19
What is the solution
(
x
,
y
)
to the system of equations above?
Q.
3
x
+
4
y
=
0
,
2
3
y
−
3
4
x
=
20
Consider the system of equations above
. If (x, y)
is the solution to the system, then what is the value of
x
y
?
Q.
−
4
x
−
6
−
2
y
=
−
4
y
+
8
y
+
2
,
2
x
+
4
=
12
Consider the system of equations above. If
(
x
,
y
)
is the solution to the system, then what is the value of
x
+
y
?
Q.
2
x
−
3
y
=
−
14
3
x
−
2
y
=
−
6
If
(
x
,
y
)
is a solution to the system of equations above, what is the value of
x
y
?
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Standard X Mathematics
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