Whakaoti i te 2-9-10z+3-8z=z-9+3z+10-10z

$$2 - 9 - 10 z + 3 - 8 z = z - 9 + 3 z + 10 - 10 z$$

Whakaoti mō z

$$z=-\frac{5}{12}\approx -0.416666667$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tangohia te 9 i te 2, ka -7.

$$-7-10z+3-8z=z-9+3z+10-10z$$

Tāpirihia te -7 ki te 3, ka -4.

$$-4-10z-8z=z-9+3z+10-10z$$

Pahekotia te -10z me -8z, ka -18z.

$$-4-18z=z-9+3z+10-10z$$

Pahekotia te z me 3z, ka 4z.

$$-4-18z=4z-9+10-10z$$

Tāpirihia te -9 ki te 10, ka 1.

$$-4-18z=4z+1-10z$$

Pahekotia te 4z me -10z, ka -6z.

$$-4-18z=-6z+1$$

Me tāpiri te 6z ki ngā taha e rua.

$$-4-18z+6z=1$$

Pahekotia te -18z me 6z, ka -12z.

$$-4-12z=1$$

Me tāpiri te 4 ki ngā taha e rua.

$$-12z=1+4$$

Tāpirihia te 1 ki te 4, ka 5.

$$-12z=5$$

Whakawehea ngā taha e rua ki te -12.

$$z=\frac{5}{-12}$$

Ka taea te hautanga \frac{5}{-12} te tuhi anō ko -\frac{5}{12} mā te tango i te tohu tōraro.

$$z=-\frac{5}{12}$$