Whakaoti mō y
y=-80
Graph
Tohaina
Kua tāruatia ki te papatopenga
57y+140-54y=-100
Tangohia te 54y mai i ngā taha e rua.
3y+140=-100
Pahekotia te 57y me -54y, ka 3y.
3y=-100-140
Tangohia te 140 mai i ngā taha e rua.
3y=-240
Tangohia te 140 i te -100, ka -240.
y=\frac{-240}{3}
Whakawehea ngā taha e rua ki te 3.
y=-80
Whakawehea te -240 ki te 3, kia riro ko -80.
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