Question Number 79852 by Pratah last updated on 28/Jan/20
Commented by MJS last updated on 28/Jan/20
$$\mathrm{Sir}\:\mathrm{Pratah},\:\mathrm{how}\:\mathrm{old}\:\mathrm{are}\:\mathrm{you}?\:\mathrm{this}\:\mathrm{can}\:\mathrm{be} \\ $$$$\mathrm{solved}\:\mathrm{by}\:\mathrm{any}\:\mathrm{13}\:\mathrm{years}\:\mathrm{old}\:\mathrm{student} \\ $$
Answered by key of knowledge last updated on 28/Jan/20
$$\:\:\mathrm{3}.\mathrm{5}\:\:\:\:+\:\:\:\:\mathrm{4}.\mathrm{5}=\mathrm{8} \\ $$$$\:\:\:+\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:+ \\ $$$$\:\:\mathrm{9}.\mathrm{5}\:\:\:\:−\:\:\:\:\mathrm{3}.\mathrm{5}=\mathrm{6} \\ $$$$\:\:\:=\mathrm{13}\:\:\:\:\:\:\:\:\:=\mathrm{8} \\ $$
Answered by mathocean1 last updated on 28/Jan/20
$$\mathrm{first}\:\mathrm{line}\:\mathrm{from}\:\mathrm{left}\:\mathrm{to}\:\mathrm{right}\:\mathrm{7}/\mathrm{2}\:\mathrm{and}\:\mathrm{9}/\mathrm{2} \\ $$$$\mathrm{the}\:\mathrm{same}\:\mathrm{for}\:\mathrm{second}\:\mathrm{line}\:\mathrm{19}/\mathrm{2}\:\mathrm{and}\:\mathrm{7}/\mathrm{2} \\ $$