Whakaoti mō x
x=\frac{y}{5}
Whakaoti mō y
y=5x
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x+y-7x=0
Tangohia te 7x mai i ngā taha e rua.
-5x+y=0
Pahekotia te 2x me -7x, ka -5x.
-5x=-y
Tangohia te y mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
\frac{-5x}{-5}=-\frac{y}{-5}
Whakawehea ngā taha e rua ki te -5.
x=-\frac{y}{-5}
Mā te whakawehe ki te -5 ka wetekia te whakareanga ki te -5.
x=\frac{y}{5}
Whakawehe -y ki te -5.
y=7x-2x
Tangohia te 2x mai i ngā taha e rua.
y=5x
Pahekotia te 7x me -2x, ka 5x.
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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