(7/10)-7/4=3(-7/10)-2(-frac{17/10)}{5} eching

$$( \frac { 7 } { 10 } ) - \frac { 7 } { 4 } = 3 ( - \frac { 7 } { 10 } ) - \frac { 2 ( - \frac { 17 } { 10 } ) } { 5 }$$

Tasdiqlamoq

Yechim qadamlari

Tenglamaning ikkala tarafini 20 ga, 10,4,5 ning eng kichik karralisiga ko‘paytiring.

$$14-35=60\left(-\frac{7}{10}\right)-4\times 2\left(-\frac{17}{10}\right)$$

-21 olish uchun 14 dan 35 ni ayirish.

$$-21=60\left(-\frac{7}{10}\right)-4\times 2\left(-\frac{17}{10}\right)$$

60\left(-\frac{7}{10}\right) ni yagona kasrga aylantiring.

$$-21=\frac{60\left(-7\right)}{10}-4\times 2\left(-\frac{17}{10}\right)$$

-420 hosil qilish uchun 60 va -7 ni ko'paytirish.

$$-21=\frac{-420}{10}-4\times 2\left(-\frac{17}{10}\right)$$

-42 ni olish uchun -420 ni 10 ga bo‘ling.

$$-21=-42-4\times 2\left(-\frac{17}{10}\right)$$

-8 hosil qilish uchun -4 va 2 ni ko'paytirish.

$$-21=-42-8\left(-\frac{17}{10}\right)$$

-8\left(-\frac{17}{10}\right) ni yagona kasrga aylantiring.

$$-21=-42+\frac{-8\left(-17\right)}{10}$$

136 hosil qilish uchun -8 va -17 ni ko'paytirish.

$$-21=-42+\frac{136}{10}$$

\frac{136}{10} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-21=-42+\frac{68}{5}$$

-42 ni -\frac{210}{5} kasrga o‘giring.

$$-21=-\frac{210}{5}+\frac{68}{5}$$

-\frac{210}{5} va \frac{68}{5} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$-21=\frac{-210+68}{5}$$

-142 olish uchun -210 va 68'ni qo'shing.

$$-21=-\frac{142}{5}$$

-21 ni -\frac{105}{5} kasrga o‘giring.

$$-\frac{105}{5}=-\frac{142}{5}$$

-\frac{105}{5} va -\frac{142}{5} ni taqqoslang.

$$\text{false}$$