1980=2*22/7*15*x eching

$$1980=2 \times \frac{ 22 }{ 7 } \times 15 \times x$$

x uchun yechish

$$x=21$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

2\times \frac{22}{7} ni yagona kasrga aylantiring.

$$1980=\frac{2\times 22}{7}\times 15x$$

44 hosil qilish uchun 2 va 22 ni ko'paytirish.

$$1980=\frac{44}{7}\times 15x$$

\frac{44}{7}\times 15 ni yagona kasrga aylantiring.

$$1980=\frac{44\times 15}{7}x$$

660 hosil qilish uchun 44 va 15 ni ko'paytirish.

$$1980=\frac{660}{7}x$$

Tomonlarni almashtirib, barcha oʻzgaruvchi shartlar chap tomonga oʻtkazing.

$$\frac{660}{7}x=1980$$

Ikki tarafini \frac{7}{660} va teskari kasri \frac{660}{7} ga ko‘paytiring.

$$x=1980\times \frac{7}{660}$$

1980\times \frac{7}{660} ni yagona kasrga aylantiring.

$$x=\frac{1980\times 7}{660}$$

13860 hosil qilish uchun 1980 va 7 ni ko'paytirish.

$$x=\frac{13860}{660}$$

21 ni olish uchun 13860 ni 660 ga bo‘ling.

$$x=21$$