Whakaoti i te 2(3y-2)-4(2y-5)=9

$$2 ( 3 y - 2 ) - 4 ( 2 y - 5 ) = 9$$

Whakaoti mō y

$$y = \frac{7}{2} = 3\frac{1}{2} = 3.5$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 3y-2.

$$6y-4-4\left(2y-5\right)=9$$

Whakamahia te āhuatanga tohatoha hei whakarea te -4 ki te 2y-5.

$$6y-4-8y+20=9$$

Pahekotia te 6y me -8y, ka -2y.

$$-2y-4+20=9$$

Tāpirihia te -4 ki te 20, ka 16.

$$-2y+16=9$$

Tangohia te 16 mai i ngā taha e rua.

$$-2y=9-16$$

Tangohia te 16 i te 9, ka -7.

$$-2y=-7$$

Whakawehea ngā taha e rua ki te -2.

$$y=\frac{-7}{-2}$$

Ka taea te hautanga \frac{-7}{-2} te whakamāmā ki te \frac{7}{2} mā te tango tahi i te tohu tōraro i te taurunga me te tauraro.

$$y=\frac{7}{2}$$