Whakaoti mō x
x=-\frac{y}{2}+\frac{5}{4}
Whakaoti mō y
y=\frac{5}{2}-2x
Graph
Tohaina
Kua tāruatia ki te papatopenga
4x=5-2y
Tangohia te 2y mai i ngā taha e rua.
\frac{4x}{4}=\frac{5-2y}{4}
Whakawehea ngā taha e rua ki te 4.
x=\frac{5-2y}{4}
Mā te whakawehe ki te 4 ka wetekia te whakareanga ki te 4.
x=-\frac{y}{2}+\frac{5}{4}
Whakawehe 5-2y ki te 4.
2y=5-4x
Tangohia te 4x mai i ngā taha e rua.
\frac{2y}{2}=\frac{5-4x}{2}
Whakawehea ngā taha e rua ki te 2.
y=\frac{5-4x}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
y=\frac{5}{2}-2x
Whakawehe 5-4x ki te 2.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
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