Whakaoti i te -3y+6(5y+6)=1-8(7-y)

$$- 3 y + 6 ( 5 y + 6 ) = 1 - 8 ( 7 - y )$$

Whakaoti mō y

$$y = -\frac{91}{19} = -4\frac{15}{19} \approx -4.789473684$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 6 ki te 5y+6.

$$-3y+30y+36=1-8\left(7-y\right)$$

Pahekotia te -3y me 30y, ka 27y.

$$27y+36=1-8\left(7-y\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -8 ki te 7-y.

$$27y+36=1-56+8y$$

Tangohia te 56 i te 1, ka -55.

$$27y+36=-55+8y$$

Tangohia te 8y mai i ngā taha e rua.

$$27y+36-8y=-55$$

Pahekotia te 27y me -8y, ka 19y.

$$19y+36=-55$$

Tangohia te 36 mai i ngā taha e rua.

$$19y=-55-36$$

Tangohia te 36 i te -55, ka -91.

$$19y=-91$$

Whakawehea ngā taha e rua ki te 19.

$$y=\frac{-91}{19}$$

Ka taea te hautanga \frac{-91}{19} te tuhi anō ko -\frac{91}{19} mā te tango i te tohu tōraro.

$$y=-\frac{91}{19}$$