Whakaoti i te 8x+9+12x=4*-13-5x

$$8x+9+12x=4 \times -13-5x$$

Whakaoti mō x

$$x = -\frac{61}{25} = -2\frac{11}{25} = -2.44$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Pahekotia te 8x me 12x, ka 20x.

$$20x+9=4\left(-13\right)-5x$$

Whakareatia te 4 ki te -13, ka -52.

$$20x+9=-52-5x$$

Me tāpiri te 5x ki ngā taha e rua.

$$20x+9+5x=-52$$

Pahekotia te 20x me 5x, ka 25x.

$$25x+9=-52$$

Tangohia te 9 mai i ngā taha e rua.

$$25x=-52-9$$

Tangohia te 9 i te -52, ka -61.

$$25x=-61$$

Whakawehea ngā taha e rua ki te 25.

$$x=\frac{-61}{25}$$

Ka taea te hautanga \frac{-61}{25} te tuhi anō ko -\frac{61}{25} mā te tango i te tohu tōraro.

$$x=-\frac{61}{25}$$