Whakaoti i te 7(v-1)=7v+4-4(-3v-1)

$$7 ( v - 1 ) = 7 v + 4 - 4 ( - 3 v - 1 )$$

Whakaoti mō v

$$v = -\frac{5}{4} = -1\frac{1}{4} = -1.25$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te v-1.

$$7v-7=7v+4-4\left(-3v-1\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -4 ki te -3v-1.

$$7v-7=7v+4+12v+4$$

Pahekotia te 7v me 12v, ka 19v.

$$7v-7=19v+4+4$$

Tāpirihia te 4 ki te 4, ka 8.

$$7v-7=19v+8$$

Tangohia te 19v mai i ngā taha e rua.

$$7v-7-19v=8$$

Pahekotia te 7v me -19v, ka -12v.

$$-12v-7=8$$

Me tāpiri te 7 ki ngā taha e rua.

$$-12v=8+7$$

Tāpirihia te 8 ki te 7, ka 15.

$$-12v=15$$

Whakawehea ngā taha e rua ki te -12.

$$v=\frac{15}{-12}$$

Whakahekea te hautanga \frac{15}{-12} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.

$$v=-\frac{5}{4}$$