Whakaoti mō x
x=2
Graph
Tohaina
Kua tāruatia ki te papatopenga
14x-21=2x+3
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 2x-3.
14x-21-2x=3
Tangohia te 2x mai i ngā taha e rua.
12x-21=3
Pahekotia te 14x me -2x, ka 12x.
12x=3+21
Me tāpiri te 21 ki ngā taha e rua.
12x=24
Tāpirihia te 3 ki te 21, ka 24.
x=\frac{24}{12}
Whakawehea ngā taha e rua ki te 12.
x=2
Whakawehea te 24 ki te 12, kia riro ko 2.
Ngā Tauira
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