Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
10x-2x-3=21
Hei kimi i te tauaro o 2x+3, kimihia te tauaro o ia taurangi.
8x-3=21
Pahekotia te 10x me -2x, ka 8x.
8x=21+3
Me tāpiri te 3 ki ngā taha e rua.
8x=24
Tāpirihia te 21 ki te 3, ka 24.
x=\frac{24}{8}
Whakawehea ngā taha e rua ki te 8.
x=3
Whakawehea te 24 ki te 8, kia riro ko 3.
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