Whakaoti mō x
x=-\frac{5y}{4}+25
Whakaoti mō y
y=-\frac{4x}{5}+20
Graph
Tohaina
Kua tāruatia ki te papatopenga
12x=300-15y
Tangohia te 15y mai i ngā taha e rua.
\frac{12x}{12}=\frac{300-15y}{12}
Whakawehea ngā taha e rua ki te 12.
x=\frac{300-15y}{12}
Mā te whakawehe ki te 12 ka wetekia te whakareanga ki te 12.
x=-\frac{5y}{4}+25
Whakawehe 300-15y ki te 12.
15y=300-12x
Tangohia te 12x mai i ngā taha e rua.
\frac{15y}{15}=\frac{300-12x}{15}
Whakawehea ngā taha e rua ki te 15.
y=\frac{300-12x}{15}
Mā te whakawehe ki te 15 ka wetekia te whakareanga ki te 15.
y=-\frac{4x}{5}+20
Whakawehe 300-12x ki te 15.
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