Whakaoti mō x
x=495
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x+70+2x-150=1900
Pahekotia te x me x, ka 2x.
4x+70-150=1900
Pahekotia te 2x me 2x, ka 4x.
4x-80=1900
Tangohia te 150 i te 70, ka -80.
4x=1900+80
Me tāpiri te 80 ki ngā taha e rua.
4x=1980
Tāpirihia te 1900 ki te 80, ka 1980.
x=\frac{1980}{4}
Whakawehea ngā taha e rua ki te 4.
x=495
Whakawehea te 1980 ki te 4, kia riro ko 495.
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