Class- 7, math

http://elearningedu.school.blog/2023/03/10/%e0%a6%b8%e0%a6%aa%e0%a7%8d%e0%a6%a4%e0%a6%ae-%e0%a6%b6%e0%a7%8d%e0%a6%b0%e0%a7%87%e0%a6%a3%e0%a6%bf%e0%a6%b0-%e0%a6%97%e0%a6%a3%e0%a6%bf%e0%a6%a4-%e0%a6%ac%e0%a6%87%e0%a6%af%e0%a6%bc%e0%a7%87-2/