Whakaoti mō x
x=33-y
Whakaoti mō y
y=33-x
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x-21+3\left(y+7\right)=99
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te x-7.
3x-21+3y+21=99
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te y+7.
3x+3y=99
Tāpirihia te -21 ki te 21, ka 0.
3x=99-3y
Tangohia te 3y mai i ngā taha e rua.
\frac{3x}{3}=\frac{99-3y}{3}
Whakawehea ngā taha e rua ki te 3.
x=\frac{99-3y}{3}
Mā te whakawehe ki te 3 ka wetekia te whakareanga ki te 3.
x=33-y
Whakawehe 99-3y ki te 3.
3x-21+3\left(y+7\right)=99
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te x-7.
3x-21+3y+21=99
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te y+7.
3x+3y=99
Tāpirihia te -21 ki te 21, ka 0.
3y=99-3x
Tangohia te 3x mai i ngā taha e rua.
\frac{3y}{3}=\frac{99-3x}{3}
Whakawehea ngā taha e rua ki te 3.
y=\frac{99-3x}{3}
Mā te whakawehe ki te 3 ka wetekia te whakareanga ki te 3.
y=33-x
Whakawehe 99-3x ki te 3.
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