Whakaoti mō k
k=5
Tohaina
Kua tāruatia ki te papatopenga
k\times 12-40=4k
Tē taea kia ōrite te tāupe k ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te k.
k\times 12-40-4k=0
Tangohia te 4k mai i ngā taha e rua.
8k-40=0
Pahekotia te k\times 12 me -4k, ka 8k.
8k=40
Me tāpiri te 40 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
k=\frac{40}{8}
Whakawehea ngā taha e rua ki te 8.
k=5
Whakawehea te 40 ki te 8, kia riro ko 5.
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