Whakaoti mō u
u=-20
Tohaina
Kua tāruatia ki te papatopenga
-8\times \frac{5}{2}=u
Me whakarea ngā taha e rua ki te \frac{5}{2}, te tau utu o \frac{2}{5}.
\frac{-8\times 5}{2}=u
Tuhia te -8\times \frac{5}{2} hei hautanga kotahi.
\frac{-40}{2}=u
Whakareatia te -8 ki te 5, ka -40.
-20=u
Whakawehea te -40 ki te 2, kia riro ko -20.
u=-20
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
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