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Byju's Answer
Standard X
Mathematics
Solving Simultaneous Linear Equation Using Cramer's Rule
If 12x + 13...
Question
If
12
x
+
13
y
=
29
a
n
d
13
x
+
12
y
=
21
,
find
x
+
y
.
A
2
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B
7
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C
4
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D
11
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Solution
The correct option is
A
2
12
x
+
13
y
=
29
a
n
d
13
x
+
12
y
=
21
,
Add the two equations:
25
x
+
25
y
=
50
x
+
y
=
2
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0
Similar questions
Q.
If
12
x
+
13
y
=
29
and
13
x
+
12
y
=
21
find
x
+
y
Q.
Find the value of
x
+
y
, if
12
x
+
13
y
=
29
and
13
x
+
12
y
=
21
Q.
Solve for x and y:
1
2
x
+
1
3
y
=
2
1
3
x
+
1
2
y
=
13
6
Q.
If
y
=
e
4
x
+
2
e
−
x
, then the value of
y
′′′
−
13
y
′
−
12
y
+
7
is equal to
Q.
Solve the following simultaneous equations:
12
x
+
13
y
=
62
;
13
x
+
12
y
=
63
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