84/5*21/2 eching

$$8 \frac { 4 } { 5 } \times 2 \frac { 1 } { 2 }$$

Baholash

$$22$$

Yechim qadamlari

40 hosil qilish uchun 8 va 5 ni ko'paytirish.

$$\frac{40+4}{5}\times \frac{2\times 2+1}{2}$$

44 olish uchun 40 va 4'ni qo'shing.

$$\frac{44}{5}\times \frac{2\times 2+1}{2}$$

4 hosil qilish uchun 2 va 2 ni ko'paytirish.

$$\frac{44}{5}\times \frac{4+1}{2}$$

5 olish uchun 4 va 1'ni qo'shing.

$$\frac{44}{5}\times \frac{5}{2}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{44}{5} ni \frac{5}{2} ga ko‘paytiring.

$$\frac{44\times 5}{5\times 2}$$

Surat va maxrajdagi ikkala 5 ni qisqartiring.

$$\frac{44}{2}$$

22 ni olish uchun 44 ni 2 ga bo‘ling.

$$22$$

Omil

$$2\times 11$$