2/4--5/4 eching

$$\frac { 2 } { 4 } - \frac { - 5 } { 4 }$$

Baholash

$$\frac{7}{4}=1,75$$

Yechim qadamlari

\frac{2}{4} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{1}{2}-\frac{-5}{4}$$

\frac{-5}{4} kasri manfiy belgini olib tashlash bilan -\frac{5}{4} sifatida qayta yozilishi mumkin.

$$\frac{1}{2}-\left(-\frac{5}{4}\right)$$

-\frac{5}{4} ning teskarisi \frac{5}{4} ga teng.

$$\frac{1}{2}+\frac{5}{4}$$

2 va 4 ning eng kichik umumiy karralisi 4 ga teng. \frac{1}{2} va \frac{5}{4} ni 4 maxraj bilan kasrlarga aylantirib oling.

$$\frac{2}{4}+\frac{5}{4}$$

\frac{2}{4} va \frac{5}{4} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{2+5}{4}$$

7 olish uchun 2 va 5'ni qo'shing.

$$\frac{7}{4}$$

Omil

$$\frac{7}{2 ^ {2}} = 1\frac{3}{4} = 1,75$$