Whakaoti mō a
a=-\frac{r}{7}+b
Whakaoti mō b
b=\frac{r}{7}+a
Graph
Tohaina
Kua tāruatia ki te papatopenga
7b-7a=r
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te b-a.
-7a=r-7b
Tangohia te 7b mai i ngā taha e rua.
\frac{-7a}{-7}=\frac{r-7b}{-7}
Whakawehea ngā taha e rua ki te -7.
a=\frac{r-7b}{-7}
Mā te whakawehe ki te -7 ka wetekia te whakareanga ki te -7.
a=-\frac{r}{7}+b
Whakawehe r-7b ki te -7.
7b-7a=r
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te b-a.
7b=r+7a
Me tāpiri te 7a ki ngā taha e rua.
\frac{7b}{7}=\frac{r+7a}{7}
Whakawehea ngā taha e rua ki te 7.
b=\frac{r+7a}{7}
Mā te whakawehe ki te 7 ka wetekia te whakareanga ki te 7.
b=\frac{r}{7}+a
Whakawehe r+7a ki te 7.
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