Whakaoti i te -55=5left(2{a}_{1}(9)-3right)

$$-55 = 5 \left( 2 { a }_{ 1 } (9)-3 \right)$$

Whakaoti mō a_1

$$a_{1}=-\frac{4}{9}\approx -0.444444444$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakawehea ngā taha e rua ki te 5.

$$\frac{-55}{5}=2a_{1}\times 9-3$$

Whakawehea te -55 ki te 5, kia riro ko -11.

$$-11=2a_{1}\times 9-3$$

Whakareatia te 2 ki te 9, ka 18.

$$-11=18a_{1}-3$$

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

$$18a_{1}-3=-11$$

Me tāpiri te 3 ki ngā taha e rua.

$$18a_{1}=-11+3$$

Tāpirihia te -11 ki te 3, ka -8.

$$18a_{1}=-8$$

Whakawehea ngā taha e rua ki te 18.

$$a_{1}=\frac{-8}{18}$$

Whakahekea te hautanga \frac{-8}{18} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$a_{1}=-\frac{4}{9}$$