Question

QƏThe sum of 3 and-5/7is​

Answer 1

Answer:

1,3,5,7,.... upto n terms ...

1+3+5+7+9+...+2n−1

∑(2n−1)

2∑n−n

2

2

n(n+1)

−n

n

2

−n+n

n

2

Answer 2

Answer:

3+-5/7

21+ -5/7

16/7 answer