15+(25*45)*1/2= eching

$$15 + ( 25 \cdot 45 ) \cdot \frac { 1 } { 2 } =$$

Baholash

$$\frac{1155}{2}=577,5$$

Yechim qadamlari

1125 hosil qilish uchun 25 va 45 ni ko'paytirish.

$$15+1125\times \frac{1}{2}$$

\frac{1125}{2} hosil qilish uchun 1125 va \frac{1}{2} ni ko'paytirish.

$$15+\frac{1125}{2}$$

15 ni \frac{30}{2} kasrga o‘giring.

$$\frac{30}{2}+\frac{1125}{2}$$

\frac{30}{2} va \frac{1125}{2} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{30+1125}{2}$$

1155 olish uchun 30 va 1125'ni qo'shing.

$$\frac{1155}{2}$$

Omil

$$\frac{3 \cdot 5 \cdot 7 \cdot 11}{2} = 577\frac{1}{2} = 577,5$$