5/7*8/9-1/9*5/7 eching

$$\frac { 5 } { 7 } \times \frac { 8 } { 9 } - \frac { 1 } { 9 } \times \frac { 5 } { 7 }$$

Baholash

$$\frac{5}{9}\approx 0,555555556$$

Yechim qadamlari

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{5}{7} ni \frac{8}{9} ga ko‘paytiring.

$$\frac{5\times 8}{7\times 9}-\frac{1}{9}\times \frac{5}{7}$$

\frac{5\times 8}{7\times 9} kasridagi ko‘paytirishlarni bajaring.

$$\frac{40}{63}-\frac{1}{9}\times \frac{5}{7}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{1}{9} ni \frac{5}{7} ga ko‘paytiring.

$$\frac{40}{63}-\frac{1\times 5}{9\times 7}$$

\frac{1\times 5}{9\times 7} kasridagi ko‘paytirishlarni bajaring.

$$\frac{40}{63}-\frac{5}{63}$$

\frac{40}{63} va \frac{5}{63} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{40-5}{63}$$

35 olish uchun 40 dan 5 ni ayirish.

$$\frac{35}{63}$$

\frac{35}{63} ulushini 7 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{5}{9}$$

Omil

$$\frac{5}{3 ^ {2}} = 0,5555555555555556$$