Whakaoti mō f
f=2-\frac{9}{x}
x\neq 0
Whakaoti mō x
x=-\frac{9}{f-2}
f\neq 2
Graph
Tohaina
Kua tāruatia ki te papatopenga
fx+4=-11+2x+6
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x+3.
fx+4=-5+2x
Tāpirihia te -11 ki te 6, ka -5.
fx=-5+2x-4
Tangohia te 4 mai i ngā taha e rua.
fx=-9+2x
Tangohia te 4 i te -5, ka -9.
xf=2x-9
He hanga arowhānui tō te whārite.
\frac{xf}{x}=\frac{2x-9}{x}
Whakawehea ngā taha e rua ki te x.
f=\frac{2x-9}{x}
Mā te whakawehe ki te x ka wetekia te whakareanga ki te x.
f=2-\frac{9}{x}
Whakawehe -9+2x ki te x.
fx+4=-11+2x+6
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x+3.
fx+4=-5+2x
Tāpirihia te -11 ki te 6, ka -5.
fx+4-2x=-5
Tangohia te 2x mai i ngā taha e rua.
fx-2x=-5-4
Tangohia te 4 mai i ngā taha e rua.
fx-2x=-9
Tangohia te 4 i te -5, ka -9.
\left(f-2\right)x=-9
Pahekotia ngā kīanga tau katoa e whai ana i te x.
\frac{\left(f-2\right)x}{f-2}=-\frac{9}{f-2}
Whakawehea ngā taha e rua ki te f-2.
x=-\frac{9}{f-2}
Mā te whakawehe ki te f-2 ka wetekia te whakareanga ki te f-2.
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