Whakaoti mō x
x=-\frac{4y}{3}+40
Whakaoti mō y
y=-\frac{3x}{4}+30
Graph
Pātaitai
Linear Equation
3x+4y=120
Tohaina
Kua tāruatia ki te papatopenga
3x=120-4y
Tangohia te 4y mai i ngā taha e rua.
\frac{3x}{3}=\frac{120-4y}{3}
Whakawehea ngā taha e rua ki te 3.
x=\frac{120-4y}{3}
Mā te whakawehe ki te 3 ka wetekia te whakareanga ki te 3.
x=-\frac{4y}{3}+40
Whakawehe 120-4y ki te 3.
4y=120-3x
Tangohia te 3x mai i ngā taha e rua.
\frac{4y}{4}=\frac{120-3x}{4}
Whakawehea ngā taha e rua ki te 4.
y=\frac{120-3x}{4}
Mā te whakawehe ki te 4 ka wetekia te whakareanga ki te 4.
y=-\frac{3x}{4}+30
Whakawehe 120-3x ki te 4.
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