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U2 = 5.2 - 7 = 10 - 7 = 3
maka selisihnya adalah 43-3 = 40
= 5(10) - 7
= 43
U2 = 5n -7
= 5 ( 2) - 7
= 3
U10 - U2 = 43 - 3 = 40