(-3)^2div41/5-21/4 eching

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

Baholash

$$-\frac{3}{28}\approx -0,107142857$$

Yechim qadamlari

2 daraja ko‘rsatkichini -3 ga hisoblang va 9 ni qiymatni oling.

$$\frac{9}{\frac{4\times 5+1}{5}}-\frac{2\times 4+1}{4}$$

20 hosil qilish uchun 4 va 5 ni ko'paytirish.

$$\frac{9}{\frac{20+1}{5}}-\frac{2\times 4+1}{4}$$

21 olish uchun 20 va 1'ni qo'shing.

$$\frac{9}{\frac{21}{5}}-\frac{2\times 4+1}{4}$$

9 ni \frac{21}{5} ga bo'lish 9 ga k'paytirish \frac{21}{5} ga qaytarish.

$$9\times \frac{5}{21}-\frac{2\times 4+1}{4}$$

9\times \frac{5}{21} ni yagona kasrga aylantiring.

$$\frac{9\times 5}{21}-\frac{2\times 4+1}{4}$$

45 hosil qilish uchun 9 va 5 ni ko'paytirish.

$$\frac{45}{21}-\frac{2\times 4+1}{4}$$

\frac{45}{21} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{15}{7}-\frac{2\times 4+1}{4}$$

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

$$\frac{15}{7}-\frac{8+1}{4}$$

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

$$\frac{15}{7}-\frac{9}{4}$$

7 va 4 ning eng kichik umumiy karralisi 28 ga teng. \frac{15}{7} va \frac{9}{4} ni 28 maxraj bilan kasrlarga aylantirib oling.

$$\frac{60}{28}-\frac{63}{28}$$

\frac{60}{28} va \frac{63}{28} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{60-63}{28}$$

-3 olish uchun 60 dan 63 ni ayirish.

$$-\frac{3}{28}$$

Omil

$$-\frac{3}{28} = -0,10714285714285714$$