25:18=5:k-1 eching

$$25 : 18 = 5 : k - 1$$

k uchun yechish

$$k = \frac{90}{43} = 2\frac{4}{43} \approx 2,093023256$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

k qiymati 0 teng bo‘lmaydi, chunki nolga bo‘lish mumkin emas. Tenglamaning ikkala tarafini 18k ga, 18,k ning eng kichik karralisiga ko‘paytiring.

$$25k=18\times 5+18k\left(-1\right)$$

90 hosil qilish uchun 18 va 5 ni ko'paytirish.

$$25k=90+18k\left(-1\right)$$

-18 hosil qilish uchun 18 va -1 ni ko'paytirish.

$$25k=90-18k$$

18k ni ikki tarafga qo’shing.

$$25k+18k=90$$

43k ni olish uchun 25k va 18k ni birlashtirish.

$$43k=90$$

Ikki tarafini 43 ga bo‘ling.

$$k=\frac{90}{43}$$