-71/5-(-34/7) eching

$$- 7 \frac { 1 } { 5 } - ( - 3 \frac { 4 } { 7 } )$$

Baholash

$$-\frac{127}{35}\approx -3,628571429$$

Yechim qadamlari

35 hosil qilish uchun 7 va 5 ni ko'paytirish.

$$-\frac{35+1}{5}-\left(-\frac{3\times 7+4}{7}\right)$$

36 olish uchun 35 va 1'ni qo'shing.

$$-\frac{36}{5}-\left(-\frac{3\times 7+4}{7}\right)$$

21 hosil qilish uchun 3 va 7 ni ko'paytirish.

$$-\frac{36}{5}-\left(-\frac{21+4}{7}\right)$$

25 olish uchun 21 va 4'ni qo'shing.

$$-\frac{36}{5}-\left(-\frac{25}{7}\right)$$

-\frac{25}{7} ning teskarisi \frac{25}{7} ga teng.

$$-\frac{36}{5}+\frac{25}{7}$$

5 va 7 ning eng kichik umumiy karralisi 35 ga teng. -\frac{36}{5} va \frac{25}{7} ni 35 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{252}{35}+\frac{125}{35}$$

-\frac{252}{35} va \frac{125}{35} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-252+125}{35}$$

-127 olish uchun -252 va 125'ni qo'shing.

$$-\frac{127}{35}$$

Omil

$$-\frac{127}{35} = -3\frac{22}{35} = -3,6285714285714286$$