Whakaoti i te 5(3+x)=-2(x+7)

$$5(3+x)=-2(x+7)$$

Whakaoti mō x

$$x = -\frac{29}{7} = -4\frac{1}{7} \approx -4.142857143$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te 3+x.

$$15+5x=-2\left(x+7\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te x+7.

$$15+5x=-2x-14$$

Me tāpiri te 2x ki ngā taha e rua.

$$15+5x+2x=-14$$

Pahekotia te 5x me 2x, ka 7x.

$$15+7x=-14$$

Tangohia te 15 mai i ngā taha e rua.

$$7x=-14-15$$

Tangohia te 15 i te -14, ka -29.

$$7x=-29$$

Whakawehea ngā taha e rua ki te 7.

$$x=\frac{-29}{7}$$

Ka taea te hautanga \frac{-29}{7} te tuhi anō ko -\frac{29}{7} mā te tango i te tohu tōraro.

$$x=-\frac{29}{7}$$