Tīpoka ki ngā ihirangi matua
Whakaoti mō x
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Tohaina

500x+240y-8130x=240y
Tangohia te 8130x mai i ngā taha e rua.
-7630x+240y=240y
Pahekotia te 500x me -8130x, ka -7630x.
-7630x=240y-240y
Tangohia te 240y mai i ngā taha e rua.
-7630x=0
Pahekotia te 240y me -240y, ka 0.
x=0
He ōrite te hua o ngā tau e rua ki 0 ina 0 tētahi o rāua te iti rawa. Tātemea kāore te -7630 e ōrite ki 0, me ōrite pū te x ki 0.