Whakaoti i te 3(6r-5)+2r=3(r-5)-5r

$$3 ( 6 r - 5 ) + 2 r = 3 ( r - 5 ) - 5 r$$

Whakaoti mō r

$$r=0$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 6r-5.

$$18r-15+2r=3\left(r-5\right)-5r$$

Pahekotia te 18r me 2r, ka 20r.

$$20r-15=3\left(r-5\right)-5r$$

Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te r-5.

$$20r-15=3r-15-5r$$

Pahekotia te 3r me -5r, ka -2r.

$$20r-15=-2r-15$$

Me tāpiri te 2r ki ngā taha e rua.

$$20r-15+2r=-15$$

Pahekotia te 20r me 2r, ka 22r.

$$22r-15=-15$$

Me tāpiri te 15 ki ngā taha e rua.

$$22r=-15+15$$

Tāpirihia te -15 ki te 15, ka 0.

$$22r=0$$

He ōrite te hua o ngā tau e rua ki 0 ina 0 tētahi o rāua te iti rawa. Tātemea kāore te 22 e ōrite ki 0, me ōrite pū te r ki 0.

$$r=0$$