Tīpoka ki ngā ihirangi matua
Whakaoti mō x
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Tohaina

18x-12=3\left(x+5\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 6 ki te 3x-2.
18x-12=3x+15
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te x+5.
18x-12-3x=15
Tangohia te 3x mai i ngā taha e rua.
15x-12=15
Pahekotia te 18x me -3x, ka 15x.
15x=15+12
Me tāpiri te 12 ki ngā taha e rua.
15x=27
Tāpirihia te 15 ki te 12, ka 27.
x=\frac{27}{15}
Whakawehea ngā taha e rua ki te 15.
x=\frac{9}{5}
Whakahekea te hautanga \frac{27}{15} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.