Whakaoti i te x-10/100x+20/100x-30/100x=756

$$x - \frac { 10 } { 100 } x + \frac { 20 } { 100 } x - \frac { 30 } { 100 } x = 756$$

Whakaoti mō x

$$x=945$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakahekea te hautanga \frac{10}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 10.

$$x-\frac{1}{10}x+\frac{20}{100}x-\frac{30}{100}x=756$$

Pahekotia te x me -\frac{1}{10}x, ka \frac{9}{10}x.

$$\frac{9}{10}x+\frac{20}{100}x-\frac{30}{100}x=756$$

Whakahekea te hautanga \frac{20}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 20.

$$\frac{9}{10}x+\frac{1}{5}x-\frac{30}{100}x=756$$

Pahekotia te \frac{9}{10}x me \frac{1}{5}x, ka \frac{11}{10}x.

$$\frac{11}{10}x-\frac{30}{100}x=756$$

Whakahekea te hautanga \frac{30}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 10.

$$\frac{11}{10}x-\frac{3}{10}x=756$$

Pahekotia te \frac{11}{10}x me -\frac{3}{10}x, ka \frac{4}{5}x.

$$\frac{4}{5}x=756$$

Me whakarea ngā taha e rua ki te \frac{5}{4}, te tau utu o \frac{4}{5}.

$$x=756\times \frac{5}{4}$$

Tuhia te 756\times \frac{5}{4} hei hautanga kotahi.

$$x=\frac{756\times 5}{4}$$

Whakareatia te 756 ki te 5, ka 3780.

$$x=\frac{3780}{4}$$

Whakawehea te 3780 ki te 4, kia riro ko 945.

$$x=945$$