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A + b = 1 b + c = 2 c + a = 3 _________ + 2a + 2b + 2c = 6 a + b + c = 3
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Satakyouya1. Diketahui : a + b = 1, b + c = 2, dan c + a = 3 Ditanya : a + b + c =…?? Jawab : b +c = 2 a + b = 1 – c – a = 1 c = 1 + a c + a = 3 1 + a + a = 3 b + c = 2 2a = 2 b + 2 = 2 a = 1 b = 0 c = 2 sehingga a + b + c = 1 + 0 + 2 = 3
b + c = 2
c + a = 3
_________ +
2a + 2b + 2c = 6
a + b + c = 3
Ditanya : a + b + c =…??
Jawab : b +c = 2
a + b = 1 –
c – a = 1
c = 1 + a
c + a = 3
1 + a + a = 3 b + c = 2
2a = 2 b + 2 = 2
a = 1 b = 0
c = 2
sehingga a + b + c = 1 + 0 + 2 = 3