Question 139029
First one is correct:  {{{.15=15/100=3/20}}}


Second one: {{{1.290=1290/1000=129/100}}}.  129 = 3 * 43 and 100 = 2 * 2 * 5 *5, i.e. no factors in common, so {{{129/100}}} is reduced to lowest terms.