Whakaoti i te 6.6(z-4z)=39

$$6.6 ( z - 4 z ) = 39$$

Whakaoti mō z

$$z = -\frac{65}{33} = -1\frac{32}{33} \approx -1.96969697$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakawehea ngā taha e rua ki te 6.6.

$$z-4z=\frac{39}{6.6}$$

Whakarohaina te \frac{39}{6.6} mā te whakarea i te taurunga me te tauraro ki te 10.

$$z-4z=\frac{390}{66}$$

Whakahekea te hautanga \frac{390}{66} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 6.

$$z-4z=\frac{65}{11}$$

Pahekotia te z me -4z, ka -3z.

$$-3z=\frac{65}{11}$$

Whakawehea ngā taha e rua ki te -3.

$$z=\frac{\frac{65}{11}}{-3}$$

Tuhia te \frac{\frac{65}{11}}{-3} hei hautanga kotahi.

$$z=\frac{65}{11\left(-3\right)}$$

Whakareatia te 11 ki te -3, ka -33.

$$z=\frac{65}{-33}$$

Ka taea te hautanga \frac{65}{-33} te tuhi anō ko -\frac{65}{33} mā te tango i te tohu tōraro.

$$z=-\frac{65}{33}$$