Whakaoti mō x (complex solution)
x\in \mathrm{C}
Whakaoti mō x
x\in \mathrm{R}
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Tohaina
Kua tāruatia ki te papatopenga
18-10x+7\left(2x-4\right)=4\left(x-2.5\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 9-5x.
18-10x+14x-28=4\left(x-2.5\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 2x-4.
18+4x-28=4\left(x-2.5\right)
Pahekotia te -10x me 14x, ka 4x.
-10+4x=4\left(x-2.5\right)
Tangohia te 28 i te 18, ka -10.
-10+4x=4x-10
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te x-2.5.
-10+4x-4x=-10
Tangohia te 4x mai i ngā taha e rua.
-10=-10
Pahekotia te 4x me -4x, ka 0.
\text{true}
Whakatauritea te -10 me te -10.
x\in \mathrm{C}
He pono tēnei mō tētahi x ahakoa.
18-10x+7\left(2x-4\right)=4\left(x-2.5\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 9-5x.
18-10x+14x-28=4\left(x-2.5\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 2x-4.
18+4x-28=4\left(x-2.5\right)
Pahekotia te -10x me 14x, ka 4x.
-10+4x=4\left(x-2.5\right)
Tangohia te 28 i te 18, ka -10.
-10+4x=4x-10
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te x-2.5.
-10+4x-4x=-10
Tangohia te 4x mai i ngā taha e rua.
-10=-10
Pahekotia te 4x me -4x, ka 0.
\text{true}
Whakatauritea te -10 me te -10.
x\in \mathrm{R}
He pono tēnei mō tētahi x ahakoa.
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