Whakaoti i te 1+(3+4.2-6).2-(5-7).2

$$1+(3+4.2-6).2-(5-7).2$$

Aromātai

$$1.64$$

Ngā Upane Otinga

Tāpirihia te 3 ki te 4.2, ka 7.2.

$$1+\left(7.2-6\right)\times 0.2-\left(5-7\right)\times 0.2$$

Tangohia te 6 i te 7.2, ka 1.2.

$$1+1.2\times 0.2-\left(5-7\right)\times 0.2$$

Whakareatia te 1.2 ki te 0.2, ka 0.24.

$$1+0.24-\left(5-7\right)\times 0.2$$

Tāpirihia te 1 ki te 0.24, ka 1.24.

$$1.24-\left(5-7\right)\times 0.2$$

Tangohia te 7 i te 5, ka -2.

$$1.24-\left(-2\times 0.2\right)$$

Whakareatia te -2 ki te 0.2, ka -0.4.

$$1.24-\left(-0.4\right)$$

Ko te tauaro o -0.4 ko 0.4.

$$1.24+0.4$$

Tāpirihia te 1.24 ki te 0.4, ka 1.64.

$$1.64$$

Tauwehe

$$\frac{41}{5 ^ {2}} = 1\frac{16}{25} = 1.64$$