Whakaoti mō y
y=8
Graph
Tohaina
Kua tāruatia ki te papatopenga
108-9y=\left(y-2\right)\times 6
Whakamahia te āhuatanga tohatoha hei whakarea te 12-y ki te 9.
108-9y=6y-12
Whakamahia te āhuatanga tohatoha hei whakarea te y-2 ki te 6.
108-9y-6y=-12
Tangohia te 6y mai i ngā taha e rua.
108-15y=-12
Pahekotia te -9y me -6y, ka -15y.
-15y=-12-108
Tangohia te 108 mai i ngā taha e rua.
-15y=-120
Tangohia te 108 i te -12, ka -120.
y=\frac{-120}{-15}
Whakawehea ngā taha e rua ki te -15.
y=8
Whakawehea te -120 ki te -15, kia riro ko 8.
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