Whakaoti i te 5*10^-5=2*10^-7*a/0.029

$$5 \times 10 ^ { - 5 } = 2 \times 10 ^ { - 7 } \cdot \frac { a } { 0.029 }$$

Whakaoti mō a

$$a=7.25$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tātaihia te 10 mā te pū o -5, kia riro ko \frac{1}{100000}.

$$5\times \frac{1}{100000}=2\times 10^{-7}\times \frac{a}{0.029}$$

Whakareatia te 5 ki te \frac{1}{100000}, ka \frac{1}{20000}.

$$\frac{1}{20000}=2\times 10^{-7}\times \frac{a}{0.029}$$

Tātaihia te 10 mā te pū o -7, kia riro ko \frac{1}{10000000}.

$$\frac{1}{20000}=2\times \frac{1}{10000000}\times \frac{a}{0.029}$$

Whakareatia te 2 ki te \frac{1}{10000000}, ka \frac{1}{5000000}.

$$\frac{1}{20000}=\frac{1}{5000000}\times \frac{a}{0.029}$$

Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.

$$\frac{1}{5000000}\times \frac{a}{0.029}=\frac{1}{20000}$$

Me whakarea ngā taha e rua ki te 5000000, te tau utu o \frac{1}{5000000}.

$$\frac{a}{0.029}=\frac{1}{20000}\times 5000000$$

Whakareatia te \frac{1}{20000} ki te 5000000, ka 250.

$$\frac{a}{0.029}=250$$

Me whakarea ngā taha e rua ki te 0.029.

$$a=250\times 0.029$$

Whakareatia te 250 ki te 0.029, ka 7.25.

$$a=7.25$$