SI=P*N*R/100 eching

$$S I = \frac { P \times N \times R } { 100 }$$

I uchun yechish

$$\left\{\begin{matrix}I=\frac{NPR}{100S}\text{, }&S\neq 0\\I\in \mathrm{R}\text{, }&\left(P=0\text{ or }N=0\text{ or }R=0\right)\text{ and }S=0\end{matrix}\right,$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

Tenglamaning ikkala tarafini 100 ga ko'paytirish.

$$100SI=PNR$$

Tenglama standart shaklda.

$$100SI=NPR$$

Ikki tarafini 100S ga bo‘ling.

$$\frac{100SI}{100S}=\frac{NPR}{100S}$$

100S ga bo'lish 100S ga ko'paytirishni bekor qiladi.

$$I=\frac{NPR}{100S}$$

N uchun yechish

$$\left\{\begin{matrix}N=\frac{100IS}{PR}\text{, }&R\neq 0\text{ and }P\neq 0\\N\in \mathrm{R}\text{, }&\left(S=0\text{ and }P=0\right)\text{ or }\left(S=0\text{ and }R=0\right)\text{ or }\left(I=0\text{ and }P=0\right)\text{ or }\left(I=0\text{ and }R=0\right)\end{matrix}\right,$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

Tenglamaning ikkala tarafini 100 ga ko'paytirish.

$$100SI=PNR$$

Tomonlarni almashtirib, barcha oʻzgaruvchi shartlar chap tomonga oʻtkazing.

$$PNR=100SI$$

Tenglama standart shaklda.

$$PRN=100IS$$

Ikki tarafini PR ga bo‘ling.

$$\frac{PRN}{PR}=\frac{100IS}{PR}$$

PR ga bo'lish PR ga ko'paytirishni bekor qiladi.

$$N=\frac{100IS}{PR}$$