Whakaoti mō x
x=50
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x+80=180
Tāpirihia te 25 ki te 55, ka 80.
2x=180-80
Tangohia te 80 mai i ngā taha e rua.
2x=100
Tangohia te 80 i te 180, ka 100.
x=\frac{100}{2}
Whakawehea ngā taha e rua ki te 2.
x=50
Whakawehea te 100 ki te 2, kia riro ko 50.
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