solve ! 2x/3 -x-1 /6 + 7x-1/4=13/6
Hence , find the value of 'a' if 1/a +5x=8
Answers
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Step-by-step explanation:
7th term from the beginning will be
(
n
C
6
2
3
n−6
.3
−2
)
The 7th term from the end will be
n
C
n−6
2
3
6
.3
3
6−n
∴
n
C
n−6
2
3
6
.3
3
6−n
(
n
C
6
2
3
n−6
.3
−2
)
=
6
1
⇒6(
n
C
6
2
3
n−6
.3
−2
)=
n
C
n−6
2
3
6
.3
3
6−n
⇒6.2
3
n−6
.3
−2
=2
3
6
.3
3
6−n
⇒6.2
3
n
36
1
=
3
3
n
36
⇒6
3
n
=6
3
Comparing the powers gives us
3
n
=3
⇒n=9
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