Whakaoti mō z
z=8.1
Tohaina
Kua tāruatia ki te papatopenga
\frac{9}{2}=\frac{z}{1.8}
Whakarohaina te \frac{0.9}{0.2} mā te whakarea i te taurunga me te tauraro ki te 10.
\frac{z}{1.8}=\frac{9}{2}
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
z=\frac{9}{2}\times 1.8
Me whakarea ngā taha e rua ki te 1.8.
z=\frac{9}{2}\times \frac{9}{5}
Me tahuri ki tau ā-ira 1.8 ki te hautau \frac{18}{10}. Whakahekea te hautanga \frac{18}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
z=\frac{9\times 9}{2\times 5}
Me whakarea te \frac{9}{2} ki te \frac{9}{5} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.
z=\frac{81}{10}
Mahia ngā whakarea i roto i te hautanga \frac{9\times 9}{2\times 5}.
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