Whakaoti i te 75*(3/8+07)-(5/2)^2=

$$75 \cdot ( \frac { 3 } { 8 } + 07 ) - ( \frac { 5 } { 2 } ) ^ { 2 } =$$

Aromātai

$$\frac{175}{8}=21.875$$

Ngā Upane Otinga

Whakareatia te 0 ki te 7, ka 0.

$$75\left(\frac{3}{8}+0\right)-\left(\frac{5}{2}\right)^{2}$$

Tāpirihia te \frac{3}{8} ki te 0, ka \frac{3}{8}.

$$75\times \frac{3}{8}-\left(\frac{5}{2}\right)^{2}$$

Tuhia te 75\times \frac{3}{8} hei hautanga kotahi.

$$\frac{75\times 3}{8}-\left(\frac{5}{2}\right)^{2}$$

Whakareatia te 75 ki te 3, ka 225.

$$\frac{225}{8}-\left(\frac{5}{2}\right)^{2}$$

Tātaihia te \frac{5}{2} mā te pū o 2, kia riro ko \frac{25}{4}.

$$\frac{225}{8}-\frac{25}{4}$$

Ko te maha noa iti rawa atu o 8 me 4 ko 8. Me tahuri \frac{225}{8} me \frac{25}{4} ki te hautau me te tautūnga 8.

$$\frac{225}{8}-\frac{50}{8}$$

Tā te mea he rite te tauraro o \frac{225}{8} me \frac{50}{8}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{225-50}{8}$$

Tangohia te 50 i te 225, ka 175.

$$\frac{175}{8}$$

Tauwehe

$$\frac{5 ^ {2} \cdot 7}{2 ^ {3}} = 21\frac{7}{8} = 21.875$$