Whakaoti mō x, y
x=3X-190
y=185-X
Graph
Tohaina
Kua tāruatia ki te papatopenga
y+X=185,15y+5x=1825
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=185
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=185-X
Me tango X mai i ngā taha e rua o te whārite.
15\left(185-X\right)+5x=1825
Whakakapia te 185-X mō te y ki tērā atu whārite, 15y+5x=1825.
2775-15X+5x=1825
Whakareatia 15 ki te 185-X.
5x=15X-950
Me tango 2775-15X mai i ngā taha e rua o te whārite.
x=3X-190
Whakawehea ngā taha e rua ki te 5.
y=185-X,x=3X-190
Kua oti te pūnaha te whakatau.
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