Whakaoti i te -5=-4/5(8)+b

$$- 5 = - \frac { 4 } { 5 } ( 8 ) + b$$

Whakaoti mō b

$$b = \frac{7}{5} = 1\frac{2}{5} = 1.4$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tuhia te -\frac{4}{5}\times 8 hei hautanga kotahi.

$$-5=\frac{-4\times 8}{5}+b$$

Whakareatia te -4 ki te 8, ka -32.

$$-5=\frac{-32}{5}+b$$

Ka taea te hautanga \frac{-32}{5} te tuhi anō ko -\frac{32}{5} mā te tango i te tohu tōraro.

$$-5=-\frac{32}{5}+b$$

Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.

$$-\frac{32}{5}+b=-5$$

Me tāpiri te \frac{32}{5} ki ngā taha e rua.

$$b=-5+\frac{32}{5}$$

Me tahuri te -5 ki te hautau -\frac{25}{5}.

$$b=-\frac{25}{5}+\frac{32}{5}$$

Tā te mea he rite te tauraro o -\frac{25}{5} me \frac{32}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$b=\frac{-25+32}{5}$$

Tāpirihia te -25 ki te 32, ka 7.

$$b=\frac{7}{5}$$