Forthe value of x, we have to solve the given equation:-
⇒727÷21821=3x5
⇒727÷42+1821=15+x5
⇒727÷6021=15+x5
⇒727×2160=15+x5
⇒185=15+x5 {cancle5 both sides}
⇒18=15+x
⇒x=18−15
∴x=3