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72-6\left(y-12\right)=0
Whakareatia te 8 ki te 9, ka 72.
72-6y+72=0
Whakamahia te āhuatanga tohatoha hei whakarea te -6 ki te y-12.
144-6y=0
Tāpirihia te 72 ki te 72, ka 144.
-6y=-144
Tangohia te 144 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
y=\frac{-144}{-6}
Whakawehea ngā taha e rua ki te -6.
y=24
Whakawehea te -144 ki te -6, kia riro ko 24.