[3/4div(-5/2)]-[(31/2)(-23/5)] eching

$$[ \frac { 3 } { 4 } \div ( - \frac { 5 } { 2 } ) ] - [ ( 3 \frac { 1 } { 2 } ) ( - 2 \frac { 3 } { 5 } ) ]$$

Baholash

$$\frac{44}{5}=8,8$$

Yechim qadamlari

\frac{3}{4} ni -\frac{5}{2} ga bo'lish \frac{3}{4} ga k'paytirish -\frac{5}{2} ga qaytarish.

$$\frac{3}{4}\left(-\frac{2}{5}\right)-\frac{3\times 2+1}{2}\left(-\frac{2\times 5+3}{5}\right)$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{3}{4} ni -\frac{2}{5} ga ko‘paytiring.

$$\frac{3\left(-2\right)}{4\times 5}-\frac{3\times 2+1}{2}\left(-\frac{2\times 5+3}{5}\right)$$

\frac{3\left(-2\right)}{4\times 5} kasridagi ko‘paytirishlarni bajaring.

$$\frac{-6}{20}-\frac{3\times 2+1}{2}\left(-\frac{2\times 5+3}{5}\right)$$

\frac{-6}{20} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{3}{10}-\frac{3\times 2+1}{2}\left(-\frac{2\times 5+3}{5}\right)$$

6 hosil qilish uchun 3 va 2 ni ko'paytirish.

$$-\frac{3}{10}-\frac{6+1}{2}\left(-\frac{2\times 5+3}{5}\right)$$

7 olish uchun 6 va 1'ni qo'shing.

$$-\frac{3}{10}-\frac{7}{2}\left(-\frac{2\times 5+3}{5}\right)$$

10 hosil qilish uchun 2 va 5 ni ko'paytirish.

$$-\frac{3}{10}-\frac{7}{2}\left(-\frac{10+3}{5}\right)$$

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

$$-\frac{3}{10}-\frac{7}{2}\left(-\frac{13}{5}\right)$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{7}{2} ni -\frac{13}{5} ga ko‘paytiring.

$$-\frac{3}{10}-\frac{7\left(-13\right)}{2\times 5}$$

\frac{7\left(-13\right)}{2\times 5} kasridagi ko‘paytirishlarni bajaring.

$$-\frac{3}{10}-\frac{-91}{10}$$

\frac{-91}{10} kasri manfiy belgini olib tashlash bilan -\frac{91}{10} sifatida qayta yozilishi mumkin.

$$-\frac{3}{10}-\left(-\frac{91}{10}\right)$$

-\frac{91}{10} ning teskarisi \frac{91}{10} ga teng.

$$-\frac{3}{10}+\frac{91}{10}$$

-\frac{3}{10} va \frac{91}{10} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-3+91}{10}$$

88 olish uchun -3 va 91'ni qo'shing.

$$\frac{88}{10}$$

\frac{88}{10} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{44}{5}$$

Omil

$$\frac{2 ^ {2} \cdot 11}{5} = 8\frac{4}{5} = 8,8$$