Whakaoti mō y
y = \frac{48}{7} = 6\frac{6}{7} \approx 6.857142857
Graph
Tohaina
Kua tāruatia ki te papatopenga
-30+y=18-6y
Whakareatia ngā taha e rua o te whārite ki te 2.
-30+y+6y=18
Me tāpiri te 6y ki ngā taha e rua.
-30+7y=18
Pahekotia te y me 6y, ka 7y.
7y=18+30
Me tāpiri te 30 ki ngā taha e rua.
7y=48
Tāpirihia te 18 ki te 30, ka 48.
y=\frac{48}{7}
Whakawehea ngā taha e rua ki te 7.
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