\left\{ \begin{array} { l } { x + y = 42 } \\ { 120 x = 2 \times 804 } \end{array} \right.
Whakaoti mō x, y
x = \frac{67}{5} = 13\frac{2}{5} = 13.4
y = \frac{143}{5} = 28\frac{3}{5} = 28.6
Graph
Tohaina
Kua tāruatia ki te papatopenga
120x=2\times 804,x+y=42
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.
120x=2\times 804
Tīpakohia tētahi o ngā whārite e rua he māmā ake ki te whakaoti mō te x mā te wehe i te x i te taha mauī o te tohu ōrite.
x=\frac{67}{5}
Whakawehea ngā taha e rua ki te 120.
\frac{67}{5}+y=42
Whakakapia te \frac{67}{5} mō te x ki tērā atu whārite, x+y=42.
y=\frac{143}{5}
Me tango \frac{67}{5} mai i ngā taha e rua o te whārite.
x=\frac{67}{5},y=\frac{143}{5}
Kua oti te pūnaha te whakatau.
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