Whakaoti i te phi=(45)(30)-(20)(5)/5(15)(55)(50)(70)

$$\phi = \frac { ( 45 ) ( 30 ) - ( 20 ) ( 5 ) } { 5 ( 15 ) ( 55 ) ( 50 ) ( 70 ) }$$

Whakaoti mō ϕ

$$ϕ=\frac{1}{11550}\approx 0.00008658$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 45 ki te 30, ka 1350.

$$ϕ=\frac{1350-20\times 5}{5\times 15\times 55\times 50\times 70}$$

Whakareatia te 20 ki te 5, ka 100.

$$ϕ=\frac{1350-100}{5\times 15\times 55\times 50\times 70}$$

Tangohia te 100 i te 1350, ka 1250.

$$ϕ=\frac{1250}{5\times 15\times 55\times 50\times 70}$$

Whakareatia te 5 ki te 15, ka 75.

$$ϕ=\frac{1250}{75\times 55\times 50\times 70}$$

Whakareatia te 75 ki te 55, ka 4125.

$$ϕ=\frac{1250}{4125\times 50\times 70}$$

Whakareatia te 4125 ki te 50, ka 206250.

$$ϕ=\frac{1250}{206250\times 70}$$

Whakareatia te 206250 ki te 70, ka 14437500.

$$ϕ=\frac{1250}{14437500}$$

Whakahekea te hautanga \frac{1250}{14437500} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 1250.

$$ϕ=\frac{1}{11550}$$

Tautapa ϕ

$$ϕ≔\frac{1}{11550}$$