Whakaoti i te 15*2+(x-15)*2+(x-15)*3=10

$$15 \times 2 + ( x - 15 ) \times 2 + ( x - 15 ) \times 3 = 10$$

Whakaoti mō x

$$x=11$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 15 ki te 2, ka 30.

$$30+\left(x-15\right)\times 2+\left(x-15\right)\times 3=10$$

Whakamahia te āhuatanga tohatoha hei whakarea te x-15 ki te 2.

$$30+2x-30+\left(x-15\right)\times 3=10$$

Tangohia te 30 i te 30, ka 0.

$$2x+\left(x-15\right)\times 3=10$$

Whakamahia te āhuatanga tohatoha hei whakarea te x-15 ki te 3.

$$2x+3x-45=10$$

Pahekotia te 2x me 3x, ka 5x.

$$5x-45=10$$

Me tāpiri te 45 ki ngā taha e rua.

$$5x=10+45$$

Tāpirihia te 10 ki te 45, ka 55.

$$5x=55$$

Whakawehea ngā taha e rua ki te 5.

$$x=\frac{55}{5}$$

Whakawehea te 55 ki te 5, kia riro ko 11.

$$x=11$$