Whakaoti mō x
x=\frac{5}{2}-4z
Whakaoti mō z
z=-\frac{x}{4}+\frac{5}{8}
Tohaina
Kua tāruatia ki te papatopenga
2x=5-8z
Tangohia te 8z mai i ngā taha e rua.
\frac{2x}{2}=\frac{5-8z}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{5-8z}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
x=\frac{5}{2}-4z
Whakawehe 5-8z ki te 2.
8z=5-2x
Tangohia te 2x mai i ngā taha e rua.
\frac{8z}{8}=\frac{5-2x}{8}
Whakawehea ngā taha e rua ki te 8.
z=\frac{5-2x}{8}
Mā te whakawehe ki te 8 ka wetekia te whakareanga ki te 8.
z=-\frac{x}{4}+\frac{5}{8}
Whakawehe 5-2x ki te 8.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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