Whakaoti mō x, y
x=\frac{8\left(X-150\right)}{5}
y=500-X
Graph
Tohaina
Kua tāruatia ki te papatopenga
y+X=500,80y+50x=28000
Hei whakaoti i ētahi whārite takirua mā te whakakapinga, me whakaoti tētahi whārite i te tuatahi mō tētahi o ngā taurangi. Ka whakakapi i te otinga mō taua taurangi ki tērā o ngā whārite.
y+X=500
Tīpakohia tētahi o ngā whārite e rua he māmā ake ki te whakaoti mō te y mā te wehe i te y i te taha mauī o te tohu ōrite.
y=500-X
Me tango X mai i ngā taha e rua o te whārite.
80\left(500-X\right)+50x=28000
Whakakapia te 500-X mō te y ki tērā atu whārite, 80y+50x=28000.
40000-80X+50x=28000
Whakareatia 80 ki te 500-X.
50x=80X-12000
Me tango 40000-80X mai i ngā taha e rua o te whārite.
x=\frac{8X}{5}-240
Whakawehea ngā taha e rua ki te 50.
y=500-X,x=\frac{8X}{5}-240
Kua oti te pūnaha te whakatau.
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