21/4*(-31/3)div13/7 eching

$$2 \frac { 1 } { 4 } \times ( - 3 \frac { 1 } { 3 } ) \div 1 \frac { 3 } { 7 }$$

Baholash

$$-\frac{21}{4}=-5,25$$

Yechim qadamlari

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

$$\frac{\frac{8+1}{4}\left(-\frac{3\times 3+1}{3}\right)}{\frac{1\times 7+3}{7}}$$

9 olish uchun 8 va 1'ni qo'shing.

$$\frac{\frac{9}{4}\left(-\frac{3\times 3+1}{3}\right)}{\frac{1\times 7+3}{7}}$$

9 hosil qilish uchun 3 va 3 ni ko'paytirish.

$$\frac{\frac{9}{4}\left(-\frac{9+1}{3}\right)}{\frac{1\times 7+3}{7}}$$

10 olish uchun 9 va 1'ni qo'shing.

$$\frac{\frac{9}{4}\left(-\frac{10}{3}\right)}{\frac{1\times 7+3}{7}}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{9}{4} ni -\frac{10}{3} ga ko‘paytiring.

$$\frac{\frac{9\left(-10\right)}{4\times 3}}{\frac{1\times 7+3}{7}}$$

\frac{9\left(-10\right)}{4\times 3} kasridagi ko‘paytirishlarni bajaring.

$$\frac{\frac{-90}{12}}{\frac{1\times 7+3}{7}}$$

\frac{-90}{12} ulushini 6 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{-\frac{15}{2}}{\frac{1\times 7+3}{7}}$$

7 hosil qilish uchun 1 va 7 ni ko'paytirish.

$$\frac{-\frac{15}{2}}{\frac{7+3}{7}}$$

10 olish uchun 7 va 3'ni qo'shing.

$$\frac{-\frac{15}{2}}{\frac{10}{7}}$$

-\frac{15}{2} ni \frac{10}{7} ga bo'lish -\frac{15}{2} ga k'paytirish \frac{10}{7} ga qaytarish.

$$-\frac{15}{2}\times \frac{7}{10}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali -\frac{15}{2} ni \frac{7}{10} ga ko‘paytiring.

$$\frac{-15\times 7}{2\times 10}$$

\frac{-15\times 7}{2\times 10} kasridagi ko‘paytirishlarni bajaring.

$$\frac{-105}{20}$$

\frac{-105}{20} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{21}{4}$$

Omil

$$-\frac{21}{4} = -5\frac{1}{4} = -5,25$$