Tīpoka ki ngā ihirangi matua
Whakaoti mō x
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

2x-4-x=-4
Tangohia te x mai i ngā taha e rua.
x-4=-4
Pahekotia te 2x me -x, ka x.
x=-4+4
Me tāpiri te 4 ki ngā taha e rua.
x=0
Tāpirihia te -4 ki te 4, ka 0.