-1/7+4/2-(-2)+-3/4= eching

$$\frac { - 1 } { 7 } + \frac { 4 } { 2 } - ( - 2 ) + \frac { - 3 } { 4 } =$$

Baholash

$$\frac{87}{28}\approx 3,107142857$$

Yechim qadamlari

\frac{-1}{7} kasri manfiy belgini olib tashlash bilan -\frac{1}{7} sifatida qayta yozilishi mumkin.

$$-\frac{1}{7}+\frac{4}{2}-\left(-2\right)+\frac{-3}{4}$$

2 ni olish uchun 4 ni 2 ga bo‘ling.

$$-\frac{1}{7}+2-\left(-2\right)+\frac{-3}{4}$$

2 ni \frac{14}{7} kasrga o‘giring.

$$-\frac{1}{7}+\frac{14}{7}-\left(-2\right)+\frac{-3}{4}$$

-\frac{1}{7} va \frac{14}{7} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-1+14}{7}-\left(-2\right)+\frac{-3}{4}$$

13 olish uchun -1 va 14'ni qo'shing.

$$\frac{13}{7}-\left(-2\right)+\frac{-3}{4}$$

-2 ning teskarisi 2 ga teng.

$$\frac{13}{7}+2+\frac{-3}{4}$$

2 ni \frac{14}{7} kasrga o‘giring.

$$\frac{13}{7}+\frac{14}{7}+\frac{-3}{4}$$

\frac{13}{7} va \frac{14}{7} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{13+14}{7}+\frac{-3}{4}$$

27 olish uchun 13 va 14'ni qo'shing.

$$\frac{27}{7}+\frac{-3}{4}$$

\frac{-3}{4} kasri manfiy belgini olib tashlash bilan -\frac{3}{4} sifatida qayta yozilishi mumkin.

$$\frac{27}{7}-\frac{3}{4}$$

7 va 4 ning eng kichik umumiy karralisi 28 ga teng. \frac{27}{7} va \frac{3}{4} ni 28 maxraj bilan kasrlarga aylantirib oling.

$$\frac{108}{28}-\frac{21}{28}$$

\frac{108}{28} va \frac{21}{28} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{108-21}{28}$$

87 olish uchun 108 dan 21 ni ayirish.

$$\frac{87}{28}$$

Omil

$$\frac{3 \cdot 29}{2 ^ {2} \cdot 7} = 3\frac{3}{28} = 3,107142857142857$$