U5 + U9 + U40 = 123. U18?
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Pertanyaan
U5 + U9 + U40 = 123. U18?
1 Jawaban
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1. Jawaban MathSolver74
[tex] U_{5} + U_9 + U_40 = 123 \\ (a + 4b) + (a + 8b) + (a + 39b) = 123 \\ 3a + 51b = 123 \\ a + 17b = 41 \\ U_(18) = 41[/tex]