Whakaoti mō r
r=10
Tohaina
Kua tāruatia ki te papatopenga
4\times 5=r\times 2
Tē taea kia ōrite te tāupe r ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te 4r, arā, te tauraro pātahi he tino iti rawa te kitea o r,4.
20=r\times 2
Whakareatia te 4 ki te 5, ka 20.
r\times 2=20
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
r=\frac{20}{2}
Whakawehea ngā taha e rua ki te 2.
r=10
Whakawehea te 20 ki te 2, kia riro ko 10.
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