Whakaoti i te (1+02)x*09-x=20

$$( 1 + 02 ) x \times 09 - x = 20$$

Whakaoti mō x

$$x=-20$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 0 ki te 2, ka 0.

$$\left(1+0\right)x\times 0\times 9-x=20$$

Tāpirihia te 1 ki te 0, ka 1.

$$1x\times 0\times 9-x=20$$

Whakareatia te 1 ki te 0, ka 0.

$$0x\times 9-x=20$$

Whakareatia te 0 ki te 9, ka 0.

$$0x-x=20$$

Ko te tau i whakarea ki te kore ka hua ko te kore.

$$0-x=20$$

Ko te tau i tāpiria he kore ka hua koia tonu.

$$-x=20$$

Me whakarea ngā taha e rua ki te -1.

$$x=-20$$