21/8div11/2 eching

$$2 \frac { 1 } { 8 } \div 1 \frac { 1 } { 2 }$$

Baholash

$$\frac{17}{12}\approx 1,416666667$$

Yechim qadamlari

\frac{2\times 8+1}{8} ni \frac{1\times 2+1}{2} ga bo'lish \frac{2\times 8+1}{8} ga k'paytirish \frac{1\times 2+1}{2} ga qaytarish.

$$\frac{\left(2\times 8+1\right)\times 2}{8\left(1\times 2+1\right)}$$

Surat va maxrajdagi ikkala 2 ni qisqartiring.

$$\frac{1+2\times 8}{4\left(1+2\right)}$$

16 hosil qilish uchun 2 va 8 ni ko'paytirish.

$$\frac{1+16}{4\left(1+2\right)}$$

17 olish uchun 1 va 16'ni qo'shing.

$$\frac{17}{4\left(1+2\right)}$$

3 olish uchun 1 va 2'ni qo'shing.

$$\frac{17}{4\times 3}$$

12 hosil qilish uchun 4 va 3 ni ko'paytirish.

$$\frac{17}{12}$$

Omil

$$\frac{17}{2 ^ {2} \cdot 3} = 1\frac{5}{12} = 1,4166666666666667$$