425/45+-321/45-215/45 eching

$$4 \frac{ 25 }{ 45 } +-3 \frac{ 21 }{ 45 } -2 \frac{ 15 }{ 45 }$$

Baholash

$$-\frac{56}{45}\approx -1,244444444$$

Yechim qadamlari

180 hosil qilish uchun 4 va 45 ni ko'paytirish.

$$\frac{180+25}{45}-\frac{3\times 45+21}{45}-\frac{2\times 45+15}{45}$$

205 olish uchun 180 va 25'ni qo'shing.

$$\frac{205}{45}-\frac{3\times 45+21}{45}-\frac{2\times 45+15}{45}$$

\frac{205}{45} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{41}{9}-\frac{3\times 45+21}{45}-\frac{2\times 45+15}{45}$$

135 hosil qilish uchun 3 va 45 ni ko'paytirish.

$$\frac{41}{9}-\frac{135+21}{45}-\frac{2\times 45+15}{45}$$

156 olish uchun 135 va 21'ni qo'shing.

$$\frac{41}{9}-\frac{156}{45}-\frac{2\times 45+15}{45}$$

\frac{156}{45} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{41}{9}-\frac{52}{15}-\frac{2\times 45+15}{45}$$

9 va 15 ning eng kichik umumiy karralisi 45 ga teng. \frac{41}{9} va \frac{52}{15} ni 45 maxraj bilan kasrlarga aylantirib oling.

$$\frac{205}{45}-\frac{156}{45}-\frac{2\times 45+15}{45}$$

\frac{205}{45} va \frac{156}{45} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{205-156}{45}-\frac{2\times 45+15}{45}$$

49 olish uchun 205 dan 156 ni ayirish.

$$\frac{49}{45}-\frac{2\times 45+15}{45}$$

90 hosil qilish uchun 2 va 45 ni ko'paytirish.

$$\frac{49}{45}-\frac{90+15}{45}$$

105 olish uchun 90 va 15'ni qo'shing.

$$\frac{49}{45}-\frac{105}{45}$$

\frac{49}{45} va \frac{105}{45} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{49-105}{45}$$

-56 olish uchun 49 dan 105 ni ayirish.

$$-\frac{56}{45}$$

Omil

$$-\frac{56}{45} = -1\frac{11}{45} = -1,2444444444444445$$