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The sequence is Un = 19 - 3n so the 20th term is 19 - 3*20 = 19 - 60 = -41
taking the 1st term as n=1 the 2nd term as n= 2 etc then the first 5 terms of 16-3n are : 1st : 16-3 = 13 2nd : 16-6 = 10 3rd : 16-9 = 7 4th: 16-12 = 4 5th : 16-15 = 1 hope this helps
10/16 in lowest term = 5/8To reduce to lowest term:1. Get the GCF of 10 & 1610 = 2 ...............* 516 = 2 * 2 * 2 * 2===========GCF=22. Divide 10 & 16 by their GCF.10÷ 2 = 516÷ 2 = 8thus; lowest term is5/8.