w uchun yechish
w=-\frac{1}{24}\approx -0,041666667
Baham ko'rish
Klipbordga nusxa olish
21w+7\times \frac{1}{4}-3w=1
7 ga 3w+\frac{1}{4} ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
21w+\frac{7}{4}-3w=1
\frac{7}{4} hosil qilish uchun 7 va \frac{1}{4} ni ko'paytirish.
18w+\frac{7}{4}=1
18w ni olish uchun 21w va -3w ni birlashtirish.
18w=1-\frac{7}{4}
Ikkala tarafdan \frac{7}{4} ni ayirish.
18w=\frac{4}{4}-\frac{7}{4}
1 ni \frac{4}{4} kasrga o‘giring.
18w=\frac{4-7}{4}
\frac{4}{4} va \frac{7}{4} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.
18w=-\frac{3}{4}
-3 olish uchun 4 dan 7 ni ayirish.
w=\frac{-\frac{3}{4}}{18}
Ikki tarafini 18 ga bo‘ling.
w=\frac{-3}{4\times 18}
\frac{-\frac{3}{4}}{18} ni yagona kasrga aylantiring.
w=\frac{-3}{72}
72 hosil qilish uchun 4 va 18 ni ko'paytirish.
w=-\frac{1}{24}
\frac{-3}{72} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.
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