Whakaoti i te -1-3a-a/4=2a-5/6

$$- 1 - \frac { 3 a - a } { 4 } = \frac { 2 a - 5 } { 6 }$$

Whakaoti mō a

$$a=-\frac{1}{5}=-0.2$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Me whakarea ngā taha e rua o te whārite ki te 12, arā, te tauraro pātahi he tino iti rawa te kitea o 4,6.

$$-12-3\left(3a-a\right)=2\left(2a-5\right)$$

Pahekotia te 3a me -a, ka 2a.

$$-12-3\times 2a=2\left(2a-5\right)$$

Whakareatia te -3 ki te 2, ka -6.

$$-12-6a=2\left(2a-5\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 2a-5.

$$-12-6a=4a-10$$

Tangohia te 4a mai i ngā taha e rua.

$$-12-6a-4a=-10$$

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

$$-12-10a=-10$$

Me tāpiri te 12 ki ngā taha e rua.

$$-10a=-10+12$$

Tāpirihia te -10 ki te 12, ka 2.

$$-10a=2$$

Whakawehea ngā taha e rua ki te -10.

$$a=\frac{2}{-10}$$

Whakahekea te hautanga \frac{2}{-10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$a=-\frac{1}{5}$$