Whakaoti i te (7/10)-7/4=3(-7/10)-2(-frac{17/10)}{5}

$$( \frac { 7 } { 10 } ) - \frac { 7 } { 4 } = 3 ( - \frac { 7 } { 10 } ) - \frac { 2 ( - \frac { 17 } { 10 } ) } { 5 }$$

Manatoko

Ngā Upane Otinga

Me whakarea ngā taha e rua o te whārite ki te 20, arā, te tauraro pātahi he tino iti rawa te kitea o 10,4,5.

$$14-35=60\left(-\frac{7}{10}\right)-4\times 2\left(-\frac{17}{10}\right)$$

Tangohia te 35 i te 14, ka -21.

$$-21=60\left(-\frac{7}{10}\right)-4\times 2\left(-\frac{17}{10}\right)$$

Tuhia te 60\left(-\frac{7}{10}\right) hei hautanga kotahi.

$$-21=\frac{60\left(-7\right)}{10}-4\times 2\left(-\frac{17}{10}\right)$$

Whakareatia te 60 ki te -7, ka -420.

$$-21=\frac{-420}{10}-4\times 2\left(-\frac{17}{10}\right)$$

Whakawehea te -420 ki te 10, kia riro ko -42.

$$-21=-42-4\times 2\left(-\frac{17}{10}\right)$$

Whakareatia te -4 ki te 2, ka -8.

$$-21=-42-8\left(-\frac{17}{10}\right)$$

Tuhia te -8\left(-\frac{17}{10}\right) hei hautanga kotahi.

$$-21=-42+\frac{-8\left(-17\right)}{10}$$

Whakareatia te -8 ki te -17, ka 136.

$$-21=-42+\frac{136}{10}$$

Whakahekea te hautanga \frac{136}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$-21=-42+\frac{68}{5}$$

Me tahuri te -42 ki te hautau -\frac{210}{5}.

$$-21=-\frac{210}{5}+\frac{68}{5}$$

Tā te mea he rite te tauraro o -\frac{210}{5} me \frac{68}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$-21=\frac{-210+68}{5}$$

Tāpirihia te -210 ki te 68, ka -142.

$$-21=-\frac{142}{5}$$

Me tahuri te -21 ki te hautau -\frac{105}{5}.

$$-\frac{105}{5}=-\frac{142}{5}$$

Whakatauritea te -\frac{105}{5} me te -\frac{142}{5}.

$$\text{false}$$