Whakaoti mō x
x=\frac{7-5y}{2}
Whakaoti mō y
y=\frac{7-2x}{5}
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x=7-5y
Tangohia te 5y mai i ngā taha e rua.
\frac{2x}{2}=\frac{7-5y}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{7-5y}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
5y=7-2x
Tangohia te 2x mai i ngā taha e rua.
\frac{5y}{5}=\frac{7-2x}{5}
Whakawehea ngā taha e rua ki te 5.
y=\frac{7-2x}{5}
Mā te whakawehe ki te 5 ka wetekia te whakareanga ki te 5.
Ngā Tauira
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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]
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