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Aku = a
Temanku = t
3a + t = 5 | x 4 | ⇒ 12a + 4t = 20
4a + 3t = 8 | x 3 | ⇒ 12a + 9t = 24 -
-5t = -4
t = 0,8
3a + t = 5
3a + 4/5 = 5
3a = 4,2
a = 1,4
Jadi, aku = 1,4
temanku = 0,8