Whakaoti mō x
x=\frac{8y}{19}
Whakaoti mō y
y=\frac{19x}{8}
Graph
Tohaina
Kua tāruatia ki te papatopenga
20x+2y=10y+x
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 10x+y.
20x+2y-x=10y
Tangohia te x mai i ngā taha e rua.
19x+2y=10y
Pahekotia te 20x me -x, ka 19x.
19x=10y-2y
Tangohia te 2y mai i ngā taha e rua.
19x=8y
Pahekotia te 10y me -2y, ka 8y.
\frac{19x}{19}=\frac{8y}{19}
Whakawehea ngā taha e rua ki te 19.
x=\frac{8y}{19}
Mā te whakawehe ki te 19 ka wetekia te whakareanga ki te 19.
20x+2y=10y+x
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 10x+y.
20x+2y-10y=x
Tangohia te 10y mai i ngā taha e rua.
20x-8y=x
Pahekotia te 2y me -10y, ka -8y.
-8y=x-20x
Tangohia te 20x mai i ngā taha e rua.
-8y=-19x
Pahekotia te x me -20x, ka -19x.
\frac{-8y}{-8}=-\frac{19x}{-8}
Whakawehea ngā taha e rua ki te -8.
y=-\frac{19x}{-8}
Mā te whakawehe ki te -8 ka wetekia te whakareanga ki te -8.
y=\frac{19x}{8}
Whakawehe -19x ki te -8.
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