Un = 4 - 3n
U30 = 4 - 3(30) = 4 - 90 = - 86
U31 = 4 - 3(31) = 4 - 93 = - 89
selisih U30 dan U31 = -86 - (-89) = -86 + 89 = 3
semoga membantu :))
Un = 4-3n
U31 = 4-3.31
= 4 - 93
U31 = -89
U30 = 4 - 3.30
= 4-90
= -86
U30 - U31 = -86 - (-89) = -86+89
= 3
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Un = 4 - 3n
U30 = 4 - 3(30) = 4 - 90 = - 86
U31 = 4 - 3(31) = 4 - 93 = - 89
selisih U30 dan U31 = -86 - (-89) = -86 + 89 = 3
semoga membantu :))
Un = 4-3n
U31 = 4-3.31
= 4 - 93
U31 = -89
U30 = 4 - 3.30
= 4-90
= -86
U30 - U31 = -86 - (-89) = -86+89
= 3