73/8-81/7 eching

$$7 \frac { 3 } { 8 } - 8 \frac { 1 } { 7 }$$

Baholash

$$-\frac{43}{56}\approx -0,767857143$$

Yechim qadamlari

56 hosil qilish uchun 7 va 8 ni ko'paytirish.

$$\frac{56+3}{8}-\frac{8\times 7+1}{7}$$

59 olish uchun 56 va 3'ni qo'shing.

$$\frac{59}{8}-\frac{8\times 7+1}{7}$$

56 hosil qilish uchun 8 va 7 ni ko'paytirish.

$$\frac{59}{8}-\frac{56+1}{7}$$

57 olish uchun 56 va 1'ni qo'shing.

$$\frac{59}{8}-\frac{57}{7}$$

8 va 7 ning eng kichik umumiy karralisi 56 ga teng. \frac{59}{8} va \frac{57}{7} ni 56 maxraj bilan kasrlarga aylantirib oling.

$$\frac{413}{56}-\frac{456}{56}$$

\frac{413}{56} va \frac{456}{56} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{413-456}{56}$$

-43 olish uchun 413 dan 456 ni ayirish.

$$-\frac{43}{56}$$

Omil

$$-\frac{43}{56} = -0,7678571428571429$$