Whakaoti i te 20*(0002+00025+0005+x+00095+0011+00125)=1

$$20 \times ( 0002 + 00025 + 0005 + x + 00095 + 0011 + 00125 ) = 1$$

Whakaoti mō x

$$x=\frac{1}{20}=0.05$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakawehea ngā taha e rua ki te 20.

$$0\times 0\times 0\times 2+0\times 0\times 0\times 25+0\times 0\times 0\times 5+x+0\times 0\times 0\times 95+0\times 0\times 11+0\times 0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 0, ka 0. Whakareatia te 0 ki te 0, ka 0. Whakareatia te 0 ki te 0, ka 0. Whakareatia te 0 ki te 0, ka 0. Whakareatia te 0 ki te 0, ka 0. Whakareatia te 0 ki te 0, ka 0.

$$0\times 0\times 2+0\times 0\times 25+0\times 0\times 5+x+0\times 0\times 95+0\times 11+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 0, ka 0.

$$0\times 2+0\times 0\times 25+0\times 0\times 5+x+0\times 0\times 95+0\times 11+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 2, ka 0.

$$0+0\times 0\times 25+0\times 0\times 5+x+0\times 0\times 95+0\times 11+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 0, ka 0.

$$0+0\times 25+0\times 0\times 5+x+0\times 0\times 95+0\times 11+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 25, ka 0.

$$0+0+0\times 0\times 5+x+0\times 0\times 95+0\times 11+0\times 125=\frac{1}{20}$$

Tāpirihia te 0 ki te 0, ka 0.

$$0\times 0\times 5+x+0\times 0\times 95+0\times 11+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 0, ka 0.

$$0\times 5+x+0\times 0\times 95+0\times 11+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 5, ka 0.

$$0+x+0\times 0\times 95+0\times 11+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 0, ka 0.

$$0+x+0\times 95+0\times 11+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 95, ka 0.

$$0+x+0+0\times 11+0\times 125=\frac{1}{20}$$

Tāpirihia te 0 ki te 0, ka 0.

$$x+0\times 11+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 11, ka 0.

$$x+0+0\times 125=\frac{1}{20}$$

Whakareatia te 0 ki te 125, ka 0.

$$x+0+0=\frac{1}{20}$$

Tāpirihia te 0 ki te 0, ka 0.

$$x=\frac{1}{20}$$