30=R*[1+39310^-3(0-20)] eching

$$30 = R \cdot [ 1 + 393 10 ^ { - 3 } ( 0 - 20 ) ]$$

R uchun yechish

$$R = -\frac{1500}{343} = -4\frac{128}{343} \approx -4,373177843$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

-3 daraja ko‘rsatkichini 10 ga hisoblang va \frac{1}{1000} ni qiymatni oling.

$$30=R\left(1+393\times \frac{1}{1000}\left(0-20\right)\right)$$

\frac{393}{1000} hosil qilish uchun 393 va \frac{1}{1000} ni ko'paytirish.

$$30=R\left(1+\frac{393}{1000}\left(0-20\right)\right)$$

-20 olish uchun 0 dan 20 ni ayirish.

$$30=R\left(1+\frac{393}{1000}\left(-20\right)\right)$$

-\frac{393}{50} hosil qilish uchun \frac{393}{1000} va -20 ni ko'paytirish.

$$30=R\left(1-\frac{393}{50}\right)$$

-\frac{343}{50} olish uchun 1 dan \frac{393}{50} ni ayirish.

$$30=R\left(-\frac{343}{50}\right)$$

Tomonlarni almashtirib, barcha oʻzgaruvchi shartlar chap tomonga oʻtkazing.

$$R\left(-\frac{343}{50}\right)=30$$

Ikki tarafini -\frac{50}{343} va teskari kasri -\frac{343}{50} ga ko‘paytiring.

$$R=30\left(-\frac{50}{343}\right)$$

-\frac{1500}{343} hosil qilish uchun 30 va -\frac{50}{343} ni ko'paytirish.

$$R=-\frac{1500}{343}$$