Whakaoti mō b
b=\frac{d-8}{2}
Whakaoti mō d
d=2\left(b+4\right)
Tohaina
Kua tāruatia ki te papatopenga
2b=-8+d
Me tāpiri te d ki ngā taha e rua.
2b=d-8
He hanga arowhānui tō te whārite.
\frac{2b}{2}=\frac{d-8}{2}
Whakawehea ngā taha e rua ki te 2.
b=\frac{d-8}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
b=\frac{d}{2}-4
Whakawehe -8+d ki te 2.
-d=-8-2b
Tangohia te 2b mai i ngā taha e rua.
-d=-2b-8
He hanga arowhānui tō te whārite.
\frac{-d}{-1}=\frac{-2b-8}{-1}
Whakawehea ngā taha e rua ki te -1.
d=\frac{-2b-8}{-1}
Mā te whakawehe ki te -1 ka wetekia te whakareanga ki te -1.
d=2b+8
Whakawehe -8-2b ki te -1.
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