Whakaoti mō x
x=-\frac{36y}{25}+84
Whakaoti mō y
y=-\frac{25x}{36}+\frac{175}{3}
Graph
Tohaina
Kua tāruatia ki te papatopenga
5x=420-7.2y
Tangohia te 7.2y mai i ngā taha e rua.
5x=-\frac{36y}{5}+420
He hanga arowhānui tō te whārite.
\frac{5x}{5}=\frac{-\frac{36y}{5}+420}{5}
Whakawehea ngā taha e rua ki te 5.
x=\frac{-\frac{36y}{5}+420}{5}
Mā te whakawehe ki te 5 ka wetekia te whakareanga ki te 5.
x=-\frac{36y}{25}+84
Whakawehe 420-\frac{36y}{5} ki te 5.
7.2y=420-5x
Tangohia te 5x mai i ngā taha e rua.
\frac{7.2y}{7.2}=\frac{420-5x}{7.2}
Whakawehea ngā taha e rua o te whārite ki te 7.2, he ōrite ki te whakarea i ngā taha e rua ki te tau huripoki o te hautanga.
y=\frac{420-5x}{7.2}
Mā te whakawehe ki te 7.2 ka wetekia te whakareanga ki te 7.2.
y=-\frac{25x}{36}+\frac{175}{3}
Whakawehe 420-5x ki te 7.2 mā te whakarea 420-5x ki te tau huripoki o 7.2.
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