Верно ли равенство 4/21 <3/17,5/8<8/13

Question

Верно ли равенство 4/21 <3/17,5/8<8/13

Answer 1

1) 4/21<3/17|х84<br>4х84/21<3х84/21<br>4х4<3х7<br>16<21,  верно  <br>