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Byju's Answer
Standard XII
Mathematics
Manipulation of a linear equation
Solve the fol...
Question
Solve the following equation and verify your answer:
3
x
+
5
4
x
+
2
=
3
x
+
4
4
x
+
7
Open in App
Solution
3
x
+
5
4
x
+
2
=
3
x
+
4
4
x
+
7
or
,
12
x
2
+
20
x
+
21
x
+
35
=
12
x
2
+
16
x
+
6
x
+
8
[
Cross
multiply
]
or
,
12
x
2
-
12
x
2
+
41
x
-
22
x
=
8
-
35
or
,
19
x
=
-
27
or
,
x
=
-
27
19
Thus
,
x
=
-
27
19
is
the
solution
of
the
given
equation
Check
:
Substituting
x
=
-
27
19
in
the
given
equation
,
we
get
:
L
.
H
.
S
.
=
3
(
-
27
19
)
+
5
4
(
-
27
19
)
+
2
=
-
81
+
95
-
108
+
38
=
14
-
70
=
-
1
5
R
.
H
.
S
.
=
3
(
-
27
19
)
+
4
4
(
-
27
19
)
+
7
=
-
81
+
76
-
108
+
133
=
-
5
25
=
-
1
5
∴
L
.
H
.
S
.
=
R
.
H
.
S
.
for
x
=
-
27
19
Suggest Corrections
0
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Standard XII Mathematics
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