Question

If 7 times 7th term is equal to 11 times 11th term, then find the 18th term of the AP.

Answer 1

$\bf\large\green{\underline{\underline{\underline{\overline{Hope \: it \: will \: help \: u}}}}}$

$mark \:as \: brainliest$

Answer 2

Step-by-step explanation:

7tn=7(a+(7-1)d)

11tn=11(a+(11-1)d)

7a+42d=11a+110d

4a=68d

a=17d

t18=a+17d

now we have a=17d

t18=17d+17d

t18=34d