3-11/12div21/21 eching

$$3 - \frac { 11 } { 12 } \div 2 \frac { 1 } { 21 }$$

Baholash

$$\frac{439}{172}\approx 2,552325581$$

Yechim qadamlari

\frac{11}{12} ni \frac{2\times 21+1}{21} ga bo'lish \frac{11}{12} ga k'paytirish \frac{2\times 21+1}{21} ga qaytarish.

$$3-\frac{11\times 21}{12\left(2\times 21+1\right)}$$

Surat va maxrajdagi ikkala 3 ni qisqartiring.

$$3-\frac{7\times 11}{4\left(1+2\times 21\right)}$$

77 hosil qilish uchun 7 va 11 ni ko'paytirish.

$$3-\frac{77}{4\left(1+2\times 21\right)}$$

42 hosil qilish uchun 2 va 21 ni ko'paytirish.

$$3-\frac{77}{4\left(1+42\right)}$$

43 olish uchun 1 va 42'ni qo'shing.

$$3-\frac{77}{4\times 43}$$

172 hosil qilish uchun 4 va 43 ni ko'paytirish.

$$3-\frac{77}{172}$$

3 ni \frac{516}{172} kasrga o‘giring.

$$\frac{516}{172}-\frac{77}{172}$$

\frac{516}{172} va \frac{77}{172} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{516-77}{172}$$

439 olish uchun 516 dan 77 ni ayirish.

$$\frac{439}{172}$$

Omil

$$\frac{439}{2 ^ {2} \cdot 43} = 2\frac{95}{172} = 2,552325581395349$$