Whakaoti mō x
x = -\frac{6800}{39} = -174\frac{14}{39} \approx -174.358974359
Graph
Tohaina
Kua tāruatia ki te papatopenga
9600-12x-12x-15x-10000=6400
Whakamahia te āhuatanga tohatoha hei whakarea te 12 ki te 800-x.
9600-24x-15x-10000=6400
Pahekotia te -12x me -12x, ka -24x.
9600-39x-10000=6400
Pahekotia te -24x me -15x, ka -39x.
-400-39x=6400
Tangohia te 10000 i te 9600, ka -400.
-39x=6400+400
Me tāpiri te 400 ki ngā taha e rua.
-39x=6800
Tāpirihia te 6400 ki te 400, ka 6800.
x=\frac{6800}{-39}
Whakawehea ngā taha e rua ki te -39.
x=-\frac{6800}{39}
Ka taea te hautanga \frac{6800}{-39} te tuhi anō ko -\frac{6800}{39} mā te tango i te tohu tōraro.
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