Whakaoti mō x
x=4
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x-20=-2\times 4
Me whakarea ngā taha e rua ki te 4.
3x-20=-8
Whakareatia te -2 ki te 4, ka -8.
3x=-8+20
Me tāpiri te 20 ki ngā taha e rua.
3x=12
Tāpirihia te -8 ki te 20, ka 12.
x=\frac{12}{3}
Whakawehea ngā taha e rua ki te 3.
x=4
Whakawehea te 12 ki te 3, kia riro ko 4.
Ngā Tauira
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Whakarerekētanga
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