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U₈= 59
U₁₄= 101
ditanya
U₂₅=...?
jawab
U₈= 59 ⇒ a+7b= 59
U₁₄= 101 ⇒ a+13b= 101
a+7b = 59
a+13b= 101
---------------- -
-6b= -42
b= 7
a+7b = 59
a+7(7) = 59
a+49 = 59
a = 10
U₂₅= a+24b
= 10+24(7)
= 10+168
= 178