Whakaoti mō x
x=21
Graph
Tohaina
Kua tāruatia ki te papatopenga
2\times 7+7=x
Tē taea kia ōrite te tāupe x ki -8 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te 2\left(x+8\right), arā, te tauraro pātahi he tino iti rawa te kitea o x+8,2x+16.
14+7=x
Whakareatia te 2 ki te 7, ka 14.
21=x
Tāpirihia te 14 ki te 7, ka 21.
x=21
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
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