Whakaoti i te 0.4(7x+14)=1.6-(x+2)

$$0.4 ( 7 x + 14 ) = 1.6 - ( x + 2 )$$

Whakaoti mō x

$$x = -\frac{30}{19} = -1\frac{11}{19} \approx -1.578947368$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 0.4 ki te 7x+14.

$$2.8x+5.6=1.6-\left(x+2\right)$$

Hei kimi i te tauaro o x+2, kimihia te tauaro o ia taurangi.

$$2.8x+5.6=1.6-x-2$$

Tangohia te 2 i te 1.6, ka -0.4.

$$2.8x+5.6=-0.4-x$$

Me tāpiri te x ki ngā taha e rua.

$$2.8x+5.6+x=-0.4$$

Pahekotia te 2.8x me x, ka 3.8x.

$$3.8x+5.6=-0.4$$

Tangohia te 5.6 mai i ngā taha e rua.

$$3.8x=-0.4-5.6$$

Tangohia te 5.6 i te -0.4, ka -6.

$$3.8x=-6$$

Whakawehea ngā taha e rua ki te 3.8.

$$x=\frac{-6}{3.8}$$

Whakarohaina te \frac{-6}{3.8} mā te whakarea i te taurunga me te tauraro ki te 10.

$$x=\frac{-60}{38}$$

Whakahekea te hautanga \frac{-60}{38} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$x=-\frac{30}{19}$$