Tīpoka ki ngā ihirangi matua
Whakaoti mō x
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Tohaina

-3x-9=-6x+8-4x+3
Pahekotia te 2x me -5x, ka -3x.
-3x-9=-10x+8+3
Pahekotia te -6x me -4x, ka -10x.
-3x-9=-10x+11
Tāpirihia te 8 ki te 3, ka 11.
-3x-9+10x=11
Me tāpiri te 10x ki ngā taha e rua.
7x-9=11
Pahekotia te -3x me 10x, ka 7x.
7x=11+9
Me tāpiri te 9 ki ngā taha e rua.
7x=20
Tāpirihia te 11 ki te 9, ka 20.
x=\frac{20}{7}
Whakawehea ngā taha e rua ki te 7.