X uchun yechish
X=400
Baham ko'rish
Klipbordga nusxa olish
\frac{2}{5}X=140+20
20 ni ikki tarafga qo’shing.
\frac{2}{5}X=160
160 olish uchun 140 va 20'ni qo'shing.
X=160\times \frac{5}{2}
Ikki tarafini \frac{5}{2} va teskari kasri \frac{2}{5} ga ko‘paytiring.
X=\frac{160\times 5}{2}
160\times \frac{5}{2} ni yagona kasrga aylantiring.
X=\frac{800}{2}
800 hosil qilish uchun 160 va 5 ni ko'paytirish.
X=400
400 ni olish uchun 800 ni 2 ga bo‘ling.
Misollar
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