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Byju's Answer
Standard VIII
Mathematics
Solving Equations with Variables on Both Sides
If x = 45 x...
Question
If
x
=
4
5
(
x
+
10
)
, then
x
=
A
12
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B
112
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C
40
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D
39
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Solution
The correct option is
C
40
Given,
x
=
4
5
(
x
+
10
)
⇒
5
x
=
4
x
+
40
Subtract
4
x
from both the sides, we get
⇒
5
x
−
4
x
=
4
x
+
40
−
4
x
⇒
x
=
40
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3
Similar questions
Q.
Find
x
5
x
2
+
3
x
4
≥
39
4
Q.
Let
(
1
−
x
+
x
4
)
10
=
a
0
+
a
1
x
+
a
2
x
2
+
.
.
.
.
.
+
a
40
x
40
, then the correct option(s) is/are
Q.
After solving
x
2
−
5
x
+
12
5
x
−
12
=
x
2
−
x
−
4
x
+
4
for
(
x
≥
0
)
,
x
is
{
0
,
m
}
. Then, the v
alue of
m
is :
Q.
If a polynomial
x
4
−
5
x
3
+
x
2
+
k
x
−
12
is exactly divisible by
x
2
−
5
x
+
4
, then find the value of k.
Q.
If
−
112
×
x
=
+
112
then
x
is
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