Whakaoti mō y
y=-2
Graph
Tohaina
Kua tāruatia ki te papatopenga
30+8y+7y=0
Me tāpiri te 7y ki ngā taha e rua.
30+15y=0
Pahekotia te 8y me 7y, ka 15y.
15y=-30
Tangohia te 30 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
y=\frac{-30}{15}
Whakawehea ngā taha e rua ki te 15.
y=-2
Whakawehea te -30 ki te 15, kia riro ko -2.
Ngā Tauira
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