-3/5+-2/3--1/7= eching

$$\frac { - 3 } { 5 } + \frac { - 2 } { 3 } - \frac { - 1 } { 7 } =$$

Baholash

$$-\frac{118}{105}\approx -1,123809524$$

Yechim qadamlari

\frac{-3}{5} kasri manfiy belgini olib tashlash bilan -\frac{3}{5} sifatida qayta yozilishi mumkin.

$$-\frac{3}{5}+\frac{-2}{3}-\frac{-1}{7}$$

\frac{-2}{3} kasri manfiy belgini olib tashlash bilan -\frac{2}{3} sifatida qayta yozilishi mumkin.

$$-\frac{3}{5}-\frac{2}{3}-\frac{-1}{7}$$

5 va 3 ning eng kichik umumiy karralisi 15 ga teng. -\frac{3}{5} va \frac{2}{3} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{9}{15}-\frac{10}{15}-\frac{-1}{7}$$

-\frac{9}{15} va \frac{10}{15} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-9-10}{15}-\frac{-1}{7}$$

-19 olish uchun -9 dan 10 ni ayirish.

$$-\frac{19}{15}-\frac{-1}{7}$$

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

$$-\frac{19}{15}-\left(-\frac{1}{7}\right)$$

-\frac{1}{7} ning teskarisi \frac{1}{7} ga teng.

$$-\frac{19}{15}+\frac{1}{7}$$

15 va 7 ning eng kichik umumiy karralisi 105 ga teng. -\frac{19}{15} va \frac{1}{7} ni 105 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{133}{105}+\frac{15}{105}$$

-\frac{133}{105} va \frac{15}{105} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-133+15}{105}$$

-118 olish uchun -133 va 15'ni qo'shing.

$$-\frac{118}{105}$$

Omil

$$-\frac{118}{105} = -1\frac{13}{105} = -1,1238095238095238$$