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Whakaoti mō x (complex solution)
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Whakaoti mō x
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Tohaina

7x-2=2x+2+5x-4
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x+1.
7x-2=7x+2-4
Pahekotia te 2x me 5x, ka 7x.
7x-2=7x-2
Tangohia te 4 i te 2, ka -2.
7x-2-7x=-2
Tangohia te 7x mai i ngā taha e rua.
-2=-2
Pahekotia te 7x me -7x, ka 0.
\text{true}
Whakatauritea te -2 me te -2.
x\in \mathrm{C}
He pono tēnei mō tētahi x ahakoa.
7x-2=2x+2+5x-4
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x+1.
7x-2=7x+2-4
Pahekotia te 2x me 5x, ka 7x.
7x-2=7x-2
Tangohia te 4 i te 2, ka -2.
7x-2-7x=-2
Tangohia te 7x mai i ngā taha e rua.
-2=-2
Pahekotia te 7x me -7x, ka 0.
\text{true}
Whakatauritea te -2 me te -2.
x\in \mathrm{R}
He pono tēnei mō tētahi x ahakoa.