12*900(60-x)=(80+5*4200)x-15 eching

$$12 \times 900(60-x)=(80+5 \times 4200)x-15$$

x uchun yechish

$$x = \frac{129603}{6376} = 20\frac{2083}{6376} \approx 20,326693852$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

10800 hosil qilish uchun 12 va 900 ni ko'paytirish.

$$10800\left(60-x\right)=\left(80+5\times 4200\right)x-15$$

10800 ga 60-x ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$648000-10800x=\left(80+5\times 4200\right)x-15$$

21000 hosil qilish uchun 5 va 4200 ni ko'paytirish.

$$648000-10800x=\left(80+21000\right)x-15$$

21080 olish uchun 80 va 21000'ni qo'shing.

$$648000-10800x=21080x-15$$

Ikkala tarafdan 21080x ni ayirish.

$$648000-10800x-21080x=-15$$

-31880x ni olish uchun -10800x va -21080x ni birlashtirish.

$$648000-31880x=-15$$

Ikkala tarafdan 648000 ni ayirish.

$$-31880x=-15-648000$$

-648015 olish uchun -15 dan 648000 ni ayirish.

$$-31880x=-648015$$

Ikki tarafini -31880 ga bo‘ling.

$$x=\frac{-648015}{-31880}$$

\frac{-648015}{-31880} ulushini -5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$x=\frac{129603}{6376}$$