3/10 = 9/30 and 2/15 = 4/309/30 + 4/30 = 13/3013/30
9/10 minus 9/15 is 3/10
7/10 minus 9/15 is 1/10
(9/10)-(2/15)=x (27/30)-(4/30)=x x=(23/30)
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¹/₁⁵ ⁺ ⁹/₁₀ =²/₃₀ ⁺ ²⁷/₃₀ = ²⁹/₃₀
12 fifteenths (sure?)19 fifteenths = 10 fifteenths (2/3) + 9 fifteenths (3/5)
3/10 = 9/30 and 2/15 = 4/309/30 + 4/30 = 13/3013/30
3/10 + 8/15 = 9/30 + 16/30 = 25/30 = 5/6
9/10 + 4/15 is same as 27/30 + 8/30 = 35/30 = 7/6 = 1 1/6
9/10 minus 9/15 is 3/10
9/10
7/10 minus 9/15 is 1/10
(9/10)-(2/15)=x (27/30)-(4/30)=x x=(23/30)
9 tenths
9/20 or .45
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