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

Tohaina

2x=180-39
Tangohia te 39 mai i ngā taha e rua.
2x=141
Tangohia te 39 i te 180, ka 141.
x=\frac{141}{2}
Whakawehea ngā taha e rua ki te 2.