Whakaoti mō x
x=\frac{y}{7}
Whakaoti mō y
y=7x
Graph
Tohaina
Kua tāruatia ki te papatopenga
-21x=-3y
Tangohia te 3y mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
\frac{-21x}{-21}=-\frac{3y}{-21}
Whakawehea ngā taha e rua ki te -21.
x=-\frac{3y}{-21}
Mā te whakawehe ki te -21 ka wetekia te whakareanga ki te -21.
x=\frac{y}{7}
Whakawehe -3y ki te -21.
3y=21x
Me tāpiri te 21x ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
\frac{3y}{3}=\frac{21x}{3}
Whakawehea ngā taha e rua ki te 3.
y=\frac{21x}{3}
Mā te whakawehe ki te 3 ka wetekia te whakareanga ki te 3.
y=7x
Whakawehe 21x ki te 3.
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