2-(5/2+3/4)div(1-4/5 eching

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

Baholash

$$-\frac{57}{4}=-14,25$$

Yechim qadamlari

2 va 4 ning eng kichik umumiy karralisi 4 ga teng. \frac{5}{2} va \frac{3}{4} ni 4 maxraj bilan kasrlarga aylantirib oling.

$$2-\frac{\frac{10}{4}+\frac{3}{4}}{1-\frac{4}{5}}$$

\frac{10}{4} va \frac{3}{4} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$2-\frac{\frac{10+3}{4}}{1-\frac{4}{5}}$$

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

$$2-\frac{\frac{13}{4}}{1-\frac{4}{5}}$$

1 ni \frac{5}{5} kasrga o‘giring.

$$2-\frac{\frac{13}{4}}{\frac{5}{5}-\frac{4}{5}}$$

\frac{5}{5} va \frac{4}{5} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$2-\frac{\frac{13}{4}}{\frac{5-4}{5}}$$

1 olish uchun 5 dan 4 ni ayirish.

$$2-\frac{\frac{13}{4}}{\frac{1}{5}}$$

\frac{13}{4} ni \frac{1}{5} ga bo'lish \frac{13}{4} ga k'paytirish \frac{1}{5} ga qaytarish.

$$2-\frac{13}{4}\times 5$$

\frac{13}{4}\times 5 ni yagona kasrga aylantiring.

$$2-\frac{13\times 5}{4}$$

65 hosil qilish uchun 13 va 5 ni ko'paytirish.

$$2-\frac{65}{4}$$

2 ni \frac{8}{4} kasrga o‘giring.

$$\frac{8}{4}-\frac{65}{4}$$

\frac{8}{4} va \frac{65}{4} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{8-65}{4}$$

-57 olish uchun 8 dan 65 ni ayirish.

$$-\frac{57}{4}$$

Omil

$$-\frac{57}{4} = -14\frac{1}{4} = -14,25$$