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Whakaoti mō x
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

20x=30\left(x-0\times 4\right)
Whakareatia te 0 ki te 0, ka 0.
20x=30\left(x-0\right)
Whakareatia te 0 ki te 4, ka 0.
20x-30\left(x-0\right)=0
Tangohia te 30\left(x-0\right) mai i ngā taha e rua.
20x-30x=0
Whakaraupapatia anō ngā kīanga tau.
-10x=0
Pahekotia te 20x me -30x, ka -10x.
x=0
He ōrite te hua o ngā tau e rua ki 0 ina 0 tētahi o rāua te iti rawa. Tātemea kāore te -10 e ōrite ki 0, me ōrite pū te x ki 0.