Whakaoti i te -2*4-t*3=-15*(2*4)+42

$$- 2 \cdot 4 - t \cdot 3 = - 15 \times ( 2 \cdot 4 ) + 42$$

Whakaoti mō t

$$t = \frac{70}{3} = 23\frac{1}{3} \approx 23.333333333$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te -2 ki te 4, ka -8.

$$-8-t\times 3=-15\times 2\times 4+42$$

Whakareatia te -15 ki te 2, ka -30.

$$-8-t\times 3=-30\times 4+42$$

Whakareatia te -30 ki te 4, ka -120.

$$-8-t\times 3=-120+42$$

Tāpirihia te -120 ki te 42, ka -78.

$$-8-t\times 3=-78$$

Whakareatia te -1 ki te 3, ka -3.

$$-8-3t=-78$$

Me tāpiri te 8 ki ngā taha e rua.

$$-3t=-78+8$$

Tāpirihia te -78 ki te 8, ka -70.

$$-3t=-70$$

Whakawehea ngā taha e rua ki te -3.

$$t=\frac{-70}{-3}$$

Ka taea te hautanga \frac{-70}{-3} te whakamāmā ki te \frac{70}{3} mā te tango tahi i te tohu tōraro i te taurunga me te tauraro.

$$t=\frac{70}{3}$$