Question

solve ! 2x/3 -x-1 /6 + 7x-1/4=13/6
Hence , find the value of 'a' if 1/a +5x=8​

Answer 1

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