Whakaoti mō x
x=\frac{9000}{11251}\approx 0.799928895
Graph
Tohaina
Kua tāruatia ki te papatopenga
900x+0.04x=\left(18000-x\right)\times 0.04
Whakareatia te 18000 ki te 0.05, ka 900.
900.04x=\left(18000-x\right)\times 0.04
Pahekotia te 900x me 0.04x, ka 900.04x.
900.04x=720-0.04x
Whakamahia te āhuatanga tohatoha hei whakarea te 18000-x ki te 0.04.
900.04x+0.04x=720
Me tāpiri te 0.04x ki ngā taha e rua.
900.08x=720
Pahekotia te 900.04x me 0.04x, ka 900.08x.
x=\frac{720}{900.08}
Whakawehea ngā taha e rua ki te 900.08.
x=\frac{72000}{90008}
Whakarohaina te \frac{720}{900.08} mā te whakarea i te taurunga me te tauraro ki te 100.
x=\frac{9000}{11251}
Whakahekea te hautanga \frac{72000}{90008} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 8.
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