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Whakaoti mō a
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Whakaoti mō l
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Tohaina

lan_{15}x=200
Whakareatia ngā taha e rua o te whārite ki te x.
ln_{15}xa=200
He hanga arowhānui tō te whārite.
\frac{ln_{15}xa}{ln_{15}x}=\frac{200}{ln_{15}x}
Whakawehea ngā taha e rua ki te ln_{15}x.
a=\frac{200}{ln_{15}x}
Mā te whakawehe ki te ln_{15}x ka wetekia te whakareanga ki te ln_{15}x.
lan_{15}x=200
Whakareatia ngā taha e rua o te whārite ki te x.
an_{15}xl=200
He hanga arowhānui tō te whārite.
\frac{an_{15}xl}{an_{15}x}=\frac{200}{an_{15}x}
Whakawehea ngā taha e rua ki te an_{15}x.
l=\frac{200}{an_{15}x}
Mā te whakawehe ki te an_{15}x ka wetekia te whakareanga ki te an_{15}x.