Question

Fill in blanks plz hurry due tmrw

5/7of ... is 5/21

... is blank

Answer 1

`\frac 57 \cdot x = \frac 5{21}\\\\\\\implies \frac x 7 = \frac 1{21}\\\\\\\implies 21x = 7\\\\\implies x = (7)/(21)\\\\\\ \text{Hence}~\frac 57 ~ \text{of}~~ (7)/(21)~ ~\text{is}~ (5)/(21)`