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Baham ko'rish

\frac{28-1}{7}\times \frac{1\times 9+1}{9}
28 hosil qilish uchun 4 va 7 ni ko'paytirish.
\frac{27}{7}\times \frac{1\times 9+1}{9}
27 olish uchun 28 dan 1 ni ayirish.
\frac{27}{7}\times \frac{9+1}{9}
9 hosil qilish uchun 1 va 9 ni ko'paytirish.
\frac{27}{7}\times \frac{10}{9}
10 olish uchun 9 va 1'ni qo'shing.
\frac{27\times 10}{7\times 9}
Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{27}{7} ni \frac{10}{9} ga ko‘paytiring.
\frac{270}{63}
\frac{27\times 10}{7\times 9} kasridagi ko‘paytirishlarni bajaring.
\frac{30}{7}
\frac{270}{63} ulushini 9 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.