20%*x+5%*y=9%*300 eching

$$20 \% \times x + 5 \% \times y = 9 \% \times 300$$

x uchun yechish

$$x=-\frac{y}{4}+135$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

\frac{20}{100} ulushini 20 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{1}{5}x+\frac{5}{100}y=\frac{9}{100}\times 300$$

\frac{5}{100} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{1}{5}x+\frac{1}{20}y=\frac{9}{100}\times 300$$

27 hosil qilish uchun \frac{9}{100} va 300 ni ko'paytirish.

$$\frac{1}{5}x+\frac{1}{20}y=27$$

Ikkala tarafdan \frac{1}{20}y ni ayirish.

$$\frac{1}{5}x=27-\frac{1}{20}y$$

Tenglama standart shaklda.

$$\frac{1}{5}x=-\frac{y}{20}+27$$

Ikkala tarafini 5 ga ko‘paytiring.

$$\frac{\frac{1}{5}x}{\frac{1}{5}}=\frac{-\frac{y}{20}+27}{\frac{1}{5}}$$

\frac{1}{5} ga bo'lish \frac{1}{5} ga ko'paytirishni bekor qiladi.

$$x=\frac{-\frac{y}{20}+27}{\frac{1}{5}}$$

27-\frac{y}{20} ni \frac{1}{5} ga bo'lish 27-\frac{y}{20} ga k'paytirish \frac{1}{5} ga qaytarish.

$$x=-\frac{y}{4}+135$$

y uchun yechish

$$y=540-4x$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

\frac{20}{100} ulushini 20 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{1}{5}x+\frac{5}{100}y=\frac{9}{100}\times 300$$

\frac{5}{100} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{1}{5}x+\frac{1}{20}y=\frac{9}{100}\times 300$$

27 hosil qilish uchun \frac{9}{100} va 300 ni ko'paytirish.

$$\frac{1}{5}x+\frac{1}{20}y=27$$

Ikkala tarafdan \frac{1}{5}x ni ayirish.

$$\frac{1}{20}y=27-\frac{1}{5}x$$

Tenglama standart shaklda.

$$\frac{1}{20}y=-\frac{x}{5}+27$$

Ikkala tarafini 20 ga ko‘paytiring.

$$\frac{\frac{1}{20}y}{\frac{1}{20}}=\frac{-\frac{x}{5}+27}{\frac{1}{20}}$$

\frac{1}{20} ga bo'lish \frac{1}{20} ga ko'paytirishni bekor qiladi.

$$y=\frac{-\frac{x}{5}+27}{\frac{1}{20}}$$

27-\frac{x}{5} ni \frac{1}{20} ga bo'lish 27-\frac{x}{5} ga k'paytirish \frac{1}{20} ga qaytarish.

$$y=540-4x$$