A=(15/4-5/2)*7/5 eching

$$A = ( \frac { 15 } { 4 } - \frac { 5 } { 2 } ) \times \frac { 7 } { 5 }$$

A uchun yechish

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

Chiziqli tenglamalarni yechish bo'yicha qadamlar

4 va 2 ning eng kichik umumiy karralisi 4 ga teng. \frac{15}{4} va \frac{5}{2} ni 4 maxraj bilan kasrlarga aylantirib oling.

$$A=\left(\frac{15}{4}-\frac{10}{4}\right)\times \frac{7}{5}$$

\frac{15}{4} va \frac{10}{4} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$A=\frac{15-10}{4}\times \frac{7}{5}$$

5 olish uchun 15 dan 10 ni ayirish.

$$A=\frac{5}{4}\times \frac{7}{5}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{5}{4} ni \frac{7}{5} ga ko‘paytiring.

$$A=\frac{5\times 7}{4\times 5}$$

Surat va maxrajdagi ikkala 5 ni qisqartiring.

$$A=\frac{7}{4}$$

A'ni tayinlash

$$A≔\frac{7}{4}$$