Whakaoti mō y
y = -\frac{45}{7} = -6\frac{3}{7} \approx -6.428571429
Graph
Tohaina
Kua tāruatia ki te papatopenga
120+15y+6y=-15
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te 24+3y.
120+21y=-15
Pahekotia te 15y me 6y, ka 21y.
21y=-15-120
Tangohia te 120 mai i ngā taha e rua.
21y=-135
Tangohia te 120 i te -15, ka -135.
y=\frac{-135}{21}
Whakawehea ngā taha e rua ki te 21.
y=-\frac{45}{7}
Whakahekea te hautanga \frac{-135}{21} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.
Ngā Tauira
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Whakarerekētanga
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